Skandapurana 16.113

Īśvara said: / Then one should go, O great goddess, to the supreme Jānakīśvara, / situated thirty bow-lengths to the southwest of Rāmeśa.

It destroys the sin of all creatures; it was worshipped of old by Jānakī, / and especially established after she had properly propitiated Śaṃkara.

Previously, the name of that very liṅga was Vasiṣṭheśa; / afterwards, in the Tretāyuga, it became renowned on earth as Jānakīśa.

Then sixty thousand great seers, the Vālakhilyas, / attained perfection there; therefore [it is also called] Siddheśvara.

It is renowned in the Kali age, O great goddess, as the liṅga of the ages, of great splendour; / upon seeing it, one is freed from sins arising from misery and misfortune.

Whether a woman or a man, whoever worships it with devotion, / properly bathing it according to rule with devotion, becomes freed from sins.

And having performed ritual ablution in the Puṣkara sacred ford, whoever worships that liṅga / self-controlled and regulated in diet for one full month continuously,

day by day for him there is fruit greater than an horse sacrifice. / The woman who worships it on the third day in the month of Māgha, / in her lineage too there shall be no misfortune, misery, or sorrow.

Thus has been told to you, O goddess, the sin-destroying māhātmya; / when heard, it removes sins and bestows good fortune.

Thus ends the one hundred and thirteenth chapter, named 'Description of the Māhātmya of Jānakīśvara', in the first [part], the Māhātmya of the Sacred Field of Prabhāsa, in the seventh [section], the Prabhāsakhaṇḍa, in the glorious Skanda Mahāpurāṇa, a compendium of eighty-one thousand [verses].