Varunapurana 7: saptamo'dhyāyaḥ

Varuṇa said: / When the lotus-born divine Brahmā desired to create, / the creation did not arise; [so] he meditated upon the Lord who destroys ignorance,

Mahādeva, the great-souled one, the source of himself and of Viṣṇu. / As that god was meditating, Hara then appeared,

Śaṅkara breaking forth from the surface of Brahmā's forehead. / With a delighted heart, Brahmā praised the god Maheśvara with Vedic words.

Brahmā said: / "God of gods, lord of the universe, source of compassion, Śaṅkara! / Hara, lord of all immortals, be pleased, supreme lord!

Bearer of the universe, Vyomakeśa, Dhūrjaṭi, Nīlalohita, / skull in hand, soul of all, clad in animal skin, sky-clad!

Create, O supreme lord, without my desire to create being exhausted; / by your creation, O god, the universe will be filled in no time."

Saying "Om," Hara, well pleased, the supreme lord created / the Rudras of boundless repose, three-eyed and crowned with the crescent moon.

Then, seeing the Rudras dwelling in the atmosphere, moving on earth, and also moving in heaven, / Prajāpati spoke:

Brahmā [spoke]: / "Homage to you, Mahādeva, Soma, crowned with the crescent moon! / O Lord, create inauspicious subjects accompanied by death;

otherwise, creation and increase will not occur at present." / At that word of Prajāpati: "I will not create mortal subjects.

Therefore be a pillar (sthāṇu) today; do you yourself create creatures, sir!" / Accepting that [command] of Maheśa, the blessed [Brahmā] created subjects.

At that time, that god of gods was renowned as Rudra-Sthāṇu. / And those eleven principal [Rudras] arose as portions of Śaṅkara:

Bhava, Rudra, Paśupati, Śipiviṣṭa, Maheśvara, / Ugra, Bhīma, Babhruka, Īśāna, Piṅgala, and Hara.

Indeed, the origin of the eleven Rudras has been told to you. / From hearing this, sins committed knowingly are no longer [held against one];

they go to destruction easily, and one attains the realm of Rudra.

Thus ends the seventh chapter, named "The Creation of the Rudras," in the Vāruṇa secondary Purāṇa.