Skandapurana 16.91

Īśvara said: / Then one should go, O great goddess, to the imperishable Tryambakeśvara; / that is declared to be the fifth, the primordial deity among the Rudras.

It was proclaimed as Śikhaṇḍīśvara previously in the Tretāyuga, O beloved; / and today I shall tell that by which it is known by men.

There is Sāmbapura, O goddess, situated there, O supreme lady; / in the northern quarter of it, a Kāpālika abode is recalled,

named Kapāleśvara, where the Lord embodied as a liṅga / is stationed for the destruction of sin from seeing and touching [him] for mortals.

In the northeast quarter from there, at a distance of sixteen bow-lengths, / Rudra himself is situated there under the name Tryambakeśvara,

the maker of grace for all, the grantor of the fruit of all desires; / where formerly, O goddess, the best of ṛṣis named Guru practiced severe austerity, / extremely difficult to perform and unbearable to gods and demons,

by whom thirty million [recitations] of the king of mantras, Tryambaka, / were chanted according to divine rites, worshiping Śaṃkara at the three junctures of the day.

Then, having propitiated the Lord of gods, he obtained divine sovereignty; / he himself named it the imperishable Tryambakeśvara.

Since he attained siddhi by chanting the Tryambaka mantra, / [and attained] divine eightfold sovereignty, therefore it is Tryambakeśvara.

It destroys all sins by darśana and even by touch; / whatever brahmin chants the Tryambaka [mantra] in the presence of Tryambakeśvara, / he attains great siddhi; he is truly Rudra manifest.

Even from the darśana of it, sin is scattered a thousandfold; / whoever worships it with devotion according to the rites, established in reverence, / with the Vāmadeva mantra, becomes freed from sins.

Whoever keeps vigil there at night on the fourteenth day of the bright fortnight of Caitra / with worship, hymns of praise, and sacred narratives, attains the desired fruit.

A cow should be given right there by those desiring the complete fruit of the pilgrimage.

Thus has been told to you, O goddess, the sin-destroying māhātmya / of Tryambakeśvara Rudra, which bestows the fruit of religious merit on mortals.

Thus ends the ninety-first chapter, named 'The Description of the Māhātmya of Tryambakeśvara,' in the Māhātmya of the Eleven Rudras, in the first [part], the Māhātmya of the Prabhāsakṣetra, in the seventh section, the Prabhāsakhaṇḍa, in the glorious Skandapurāṇa, a collection of eighty-one thousand verses.