Skanda Purana 4.101.87

4.101.87

83 nṛpapraśnānusāreṇa mārgaśīrṣaśuklatṛtīyāyāṃ rājñīnirūpitagaurīvidhidevatābhīṣṭatṛtīyāvratanirūpaṇam, vratakaraṇādrājñyāḥ putralābhaḥ mūlarkṣe jātasya mātrā vikaṭādevīpurataḥ sthāpitasya tasya śiśordevyanujñayā māheśvaryādimātṛsamīpe preṣaṇam, mātṛvisṛṣṭasya bālakasyānandakānane pañcamudrādevīnikaṭe tapaścaraṇācchivaliṃgāvirbhāvaḥ, asyaiva liṃgasya vīreśvarākhyāprāptistanmāhātmyakathanam, vīreśvaraśivena tasmai rājaputrāya nānāvidhavarāndattvā kathitānāmasigaṃgāsaṃgamasthitapuṇyasthānānāṃ krameṇa varṇana ca.. .. .... .. 327 2

83. In accordance with the king's inquiry, the exposition of the Abhīṣṭatṛtīyā observance whose presiding deity is Gaurī, as described by the queen, on the third day of the bright fortnight of Mārgaśīrṣa; the queen obtaining a son on account of performing the observance; that infant, born under the Mūla asterism and placed by his mother before the goddess Vikaṭā, being sent into the presence of the Mothers, headed by Māheśvarī, by the command of the goddess; the appearance of the Śiva-liṅga on account of the austerity performed by the boy, who was dismissed by the Mothers, near the goddess Pañcamudrā in the Ānandakānana; this very liṅga acquiring the name Vīreśvara and the narration of its māhātmya; after bestowing various boons upon that prince, the sequential description by Śiva as Vīreśvara of the sacred places situated at the confluence of the Asi and the Gaṅgā. ... 327 2