It is Shiva Shakti that is pervading the entire universe. They are the parents of the entire cosmos and everything are their expansions. There is nothing that is not Shiva Shakti.

Trisikhi Brahmana Upanishad:

A Brahmin called ‘Trishiki Brahmana’ went to the land of Sun God and asked him, “Oh God, What is body? What is soul? What is the cause and what is Athma?”

The Sun God replied:

You have to realize that all this is Shiva. Because only Shiva is ever clean, who is devoid of any blemishes, and who is everywhere and for whom there is no second. He is the only one who creates everything by his light and similar to the fire appearing in different forms on different pieces of steel, he appears in different forms.

Similar to the tastes pervading in all parts of a good fruit, Shiva Shakthi pervades every where.

The living being with egoism and self esteem is indeed Sadashiva. The living being attains that type of illusion because of his company with the ignorant soul.

Atharvasiras Upanishad:

“AUM devA ha vai svarga.n lokamAya.nste rudramapR^ichChanko bhavAniti |” (Atharvasiras Upa 1)

“Om! Once upon a time the Devas resorted to the world of Bliss (Kailasa); and the Devas addressed Rudra thus, ‘who are you?’”.

“so.abravIdahamekaH prathamamAsa.n vartAmi cha | bhavishyAmi cha nAnyaH kashchinmatto vyatirikta iti |” (Atharvasiras Upa 2)

“He replied: ‘I alone was in the beginning; I am now; and will be in the future. There is none but me’.”

He who is Rudra, he alone is god. He is Brahma and we salute him again and again.

He who is Rudra, he alone is god. He is Vishnu and we salute him again and again.

He who is Rudra, he alone is God. He is truth and we salute him again and again.

He who is Rudra, he alone is God. He is everything and we salute him again and again.

That one and only one is Rudra, it is also Eeshana (the form of Lord Shiva with tuft and riding on a bull), it is also the ultimate God and it is also the lord of all things.

That which is like lightning power is the ultimate Brahman. That Brahman is one and only one. That one and only one is Rudra (loosely translated angry one), it is also Eeshana (the form of Lord Shiva with tuft and riding on a bull), it is also the ultimate God and it is also the lord of all things. 3-6

He is called “Anantha (endless)”, because his end is neither at the top nor bottom, nor right nor left.

He is called “Para Brahmam (the ultimate reality)”, because though he is inside every thing, he is in and out of everything, he is the refuge of every thing and bigger than the big, he is inside every thing.

He is called “Eka (single)” because he singly destroys everything and recreates everything.

eko rudro na dvitIyAya tasmai ya imA.nllokAnIshata IshanIbhiH | pratya~NjanAstiShThati sa.nchukochAntakAle sa.nsR^ijya vishvA bhuvanAni goptA | (Atharvasiras Upanishad 5.02)

“Rudra is one and only one. There is none second to him. He rules all worlds by his power. He pervades fully in all beings. He is the one who, at the time of deluge, absorbs all beings. He is the one who creates all beings and upkeeps them”.

He converts fire, air, water, earth, ether and everything that exists here in to ash. He who sees this and mentally realizes it and observes the “penance to Pasupathi (Lord of all beings)” and who coats ash all over his body with this ash attains the state of Brahman. By worshipping “Pasupathi (lord of all beings)” like this, the ties of bondage of all beings get cut and they attain salvation. 5.4

“yasminnida sarvamōtaprōta tasmādanyanna parā ki~nchanāsti | na tasmātpūrva na parā.n tadasti na bhūtā nōta bhavya yadāsIt |” (Atharvasiras Upanishad 5:05)

“There is none greater than him (Rudra), on whom all the worlds are strung like beads. Over ages, nothing so far in the past was ever greater than him and nothing is going to be greater than him in future”.

Atharvasikha Upanishad 2.1:

The pranava (the sound of Om) makes all the souls to bow before it. It is the one and only one which has to be meditated upon as the four Vedas and the birth place of all devas. One who meditates like that goes away from all sorrows and fears and gets the power to protect all others who approach him. It is because of this meditation only that Lord Vishnu who is spread every where, wins over all others. It is because Lord Brahma controlled all his organs and meditated upon it, he attained the position of the creator. Even Lord Vishnu , parks his mind in the sound (Om) of the place of Paramathma (ultimate soul) and meditates upon Eeshana, who is most proper to be worshipped. All this is only proper in case of Eeshana.

Atharvasikha Upanishad 2.2:

Brahma, Vishnu, Rudra and Indra are creating all beings, all organs and all karanas. They are also capable of controlling them. But Lord Shiva exists in between them like sky and is permanently stable.

Bhasma Jabala Upanishad:

Once Bhusunda, a descendant of Jabali went to the Kailas Peak and prostrated before Lord Mahadeva Siva, who is the form of Omkara and who is beyond the trinity of Brahma, Vishnu and Rudra.

Bhusunda asked Siva: What are the daily rites to be performed by a Brahmin, by neglecting which he will commit a sin? Who is to be then meditated upon? Who is to be remembered? How to meditate? Where to practice this? Please tell me in detail.

He questioned Lord Siva: “Lord! Kindly impart to me the essential knowledge of all the Vedas, embodying the process and technique of using the Bhasma (sacred ash), because it is the only means for attaining Liberation.

The kind Lord Paramesvara said: At first the devotee after understanding the influence of the celestials at the prescribed time, should fetch some sacred and pure cow-dung early in the morning, keep it in the leaf of a Palasa-tree and then dry it with the Vedic Mantra ‘Tryambakam’ etc. (in the sun).

Lord Shiva says:

The Lord answered all in a nutshell: First of all the devotee should get up early in the morning before sunrise, and after finishing the purificatory actions, should take his bath. He should clean the body with the Rudra Suktas. Then he should wear a clean cloth. After this, he should meditate on the sun-god and apply Bhasma to all the prescribed parts of the body.

He should do Japa of either Siva-Shadakshara or Siva-Ashtakshara. ‘Om Namah Sivaya’ and ‘Om Namo Mahadevaya’ are the two Mantras. This is the highest truth and the greatest instruction. I myself am that Great Lord Siva, God of all gods, the Supreme Controller of all the universes. I am that Impersonal Brahman, I am Omkara, I am the Creator, Preserver and Destroyer of all. Through My terror only, all are working properly. I am this world and the five elements. I am the Highest Truth that exists, the Brahman of the Upanishads. This is the greatest Vidya.

I am the only giver of Moksha. Hence all people come to Me for final help. That is why I absorb into My Being those creatures who leave their Pranas at Banares which is standing at the top of My Trisula (trident). Therefore, everyone should perform penance at Banares only. Banares should not be neglected under any circumstance. Everybody should try to live at Banares as far as possible. No place is better than Banares.

Even at Banares, the most celebrated is the temple of Siva, where in the East, there is the place of Wealth, in the South, the place of Vichara, in the West, the place of Vairagya and in the North, the place of Jnana. There in the middle, I, the Eternal Spirit should be worshipped. That Linga at Banares, is not illumined by the sun, moon or the stars. That self-luminous Linga called ‘Visvesvara’ has its root in Pathala. That is Myself. I should be worshipped by one who wears the sacred Bhasma and Rudrakshas in the prescribed manner. I shall deliver him from all sins and sorrows.

By performing My Abhisheka, he attains My Sayujya state. Nothing exists other than Myself. I initiate all with the Taraka Mantra. Those who want Mukti should live at Banares. I will take care of them. I am the Lord of Brahma, Vishnu and Rudra. The most corrupt man or woman will attain Moksha, if he or she dies at Banares. Other sinners will be fried in burning pits of live coals after death. Therefore, everybody should try to live at Banares which is My Pranalinga Itself.

Varaha Upanishad 4:32:

“shivo guruH shivo vedaH shiva devaH shivaH prabhuHshivo.asmyaha.n shivaH sarva.n shivadanyanna ki.nchana”

“Shiva alone is Guru; Shiva alone is Vedas; Shiva alone is Lord; Shiva alone is I; Shiva alone is all. There is none other than Shiva”. These words are spoken by none other than Lord Varaha (Vishnu).

Sarabha Upanishad:

1. Om. Next Paippalada (the consumer of the fruit of action) addressed the Brahma. ‘Amongst Brahma, Vishnu and Rudra, O Lord, who is to be more meditated upon? Kindly explain to us the truth alone.

2. To him the Pitamaha replied. O Paippalada, hear this speech.

3. The Paramesvara (the Supreme Lord) is to be obtained by him, who has practiced many virtues. I myself, Hari, Indra and others, are born from His body.

4. The Devas and others do not know, by ignorance, the great Lord who is the Supreme Isvara, and the father.

5. He, who first created the Brahma, and gave out to him all the Vedas, is to be praised, who is the Divine Lord, father of the Devas, and creator of myself and Vishnu.

6. He is the Supreme one, who dissolves all the worlds, at the time of dissolution. He alone is the ruler of all.

7. He, the Supreme Lord, assuming the terrible form called ‘Sarabha’ (divine bird), the mighty one killed (was about to kill) Nrisimha, the world destroyer (after drinking the blood of Hiranyaksha, Nrisimha became very troublesome as he could not digest it). The lords of Devas requested him who was taking the life of him (Nrisimha) by his feet, ‘Do not, O, mighty one, do not take away the life of Vishnu, the person, in this dead night.’

8. The Lord by His sharp nails opened (his body and drank the venomed blood) out of compassion, and the mighty one, clad by his skin, is called ‘Virabadra’ (the pacifier of heated ones).

9. He, the Rudra, alone should be meditated upon in order to accomplish all.

10. Let there be adoration to that Rudra, who was the destroyer of the fifth face of Brahma.

12. Let there be adoration to that Rudra, who by His left foot killed the Death, (Markandeya’s Story) and who drank the terrible poison.

13. Let there be adoration to that Rudra, who bestowed the disc (chakra) on Vishnu, who worshipped him by one of his Eyes on his left foot. (When Vishnu found wanting one lotus flower, he pulled out one of his Eyes, making offering, completed the Sahasranamarchana).

14. Let there be adoration to that Rudra, who, the mighty one, at the sacrifice of Daksha, after conquering the multitude of the Devas, bound Vishnu by a big noose.

17 – 18. Let there be adoration to that Rudra, who, the ancient Lord, killed the terrible and troublesome incarnations of Vishnu, namely, Matsya, Karma, Varaha, Narasimha and Vamana; and who reduced Manmata * into ashes. Thus by many hymns, (the Devas) pacified Nilakantha, the great Lord. [* The God of Love.]

19. He, Paramesvara, removes all kinds of sufferings, birth, death &c., caused by the three kinds of afflictions. Thus praised by the hymns, the ancient Lord, the self of all the embodied ones, Sankara, protects all the beings. He be praised, who transcends the mind and the speech, the great Lord, whose lotus like two feet, even now Vishnu is seeking to find out. The Lord showed his grace to Vishnu, who was bent with much devotion.

21. He is subtler than the subtlest, and the bigger than the biggest, the Atman is secreted in the cavity of this being. By his grace sees his glory, he who has no desire and who has no sorrow.

22. He is meditated upon in the heart, by Vasishtha, Vyasa, Vamadeva, Virinchi and others; the ancient Lord, Mahesa, is praised by Sanatsujatiya, Sanatana and others. He is the truth, eternal, the witness of all, Mahesa, ever blissful, unchanged, formless, who has unlimited energy, and who has no Lord above him, has created by his own avidya, the object.

23. The maya bewilders, O observer of food vows, me much and Vishnu. By the meditation on his feet it can be crossed easily, though it is very difficult to cross.

24. Vishnu, the origin of all the worlds, with his own manifestations, and along with my manifestations, protects all the worlds. The same become dissolved by time. Therefore (except him) all others are false.

25. Let there be adoration to that Rudra, who is the great consumer, the great Lord, the trident holder, the auspicious and Mahesvara.

30. The Devas are bewildered by the influence of His Maya, through the ideas of ‘mine’ and others.

31. One is unable to describe His glory, even a particle of it.

32. Brahma is above Para (the world); above him is Vishnu; above him is, indeed, Isa. Equal or superior to him, there is none.

33. There is only one Siva, eternal: Except Him all else is false. Therefore, giving up all other worshipful gods, Siva alone is to be meditated upon forever, who is the remover of all the samsaras.

34. To Him, adoration, who is the great consumer, the Mahesvara.

35. This great Sastra, O Paippaladaa, is not to be given to any indiscriminately; to the Atheist, ungrateful, bad character, evil-minded one, egotistic, sinful, rogue, utterer of falsehood. It is to be given to a good fellow, Devotee, observer of good vows, good conduct, devoted to guru, calm and quiet, good-hearted, and the devotee of Siva. This work of Brahman, can be handed down through him who has the above qualifications. This is to be instructed only to one’s own pupils, who do not break down the good vows, O Sage; and not to others. It is to be kept in secret always; O the best of theBrahmanas.

36. The twice-born one who studies and hears this Paippalada Sastra, becomes freed from birth and death. He who understands this, attains the state of immortality. He is freed from the dwelling in the womb; becomes purified from the sin of tasting the liquor; from the theft of gold; from Brahmanicide; from the sin of lying down with guru’s bed. He gets the virtue of studying all the Vedas, of meditating on all the Devas; he becomes purified from all the heinous crimes; he gets the virtue of taking the pilgrimage to Kasi. He becomes ever beloved of Siva. He attains the equal state of Siva. He does never return, does never return. He becomes Brahman only. Thus says the Lord Brahma. Thus ends the Upanishad.