Skandapurana 1.4.65.16

1.4.65.16

15 varāṃgyāḥ śakrakṛtāṃ viḍambanāṃ nirīkṣya tapaḥprabhāveṇā''surabhāvanivṛttasyāpi vajrāṃgasya priyāyāḥ priyakaraṇārthaṃ mahendrapratīkārārtha ca bhūyo'pi tapaścaryākaraṇam, tatastattapastuṣṭena brahmaṇā vajrāṃgasya devadarpadalanaputraprāptirūpavaraṃ pradāya tapaso nivartanam, tato vajrāṃgādvarāṃgyāṃ tārakāsurasyotpattiḥ, sarvadaityaistārakāsurasya daityarājyābhiṣekaḥ, tatastārakāsurasya devanirjigīṣayā pāriyātraparvatakandarāṃ gatvā tapaḥkaraṇam, tattapastuṣṭena brahmaṇā saptavāsaraṃ bālakaṃ vinā'nyaiḥ sarvairavadhyatvarupavarapradānam, brahmavarorjitasya tārakāsurasya nijarājye'vasthānam......... ... 105 1

15. Seeing the mockery of Varāṅgī done by Śakra, Vajrāṅga, though his demonic nature had ceased through the power of austerity, undertakes austerity once again in order to please his beloved and to retaliate against Mahendra; then Brahmā, pleased by that austerity, dissuades Vajrāṅga from austerity by granting the boon of obtaining a son who would crush the pride of the gods; then from Vajrāṅga is born Tārakāsura upon Varāṅgī; all the Daityas coronate Tārakāsura over the Daitya kingdom; then Tārakāsura, desiring to conquer the gods, goes to a cave of Mount Pāriyātra and performs austerity; Brahmā, pleased by that austerity, grants the boon that he cannot be killed by any others except an infant of seven days; fortified by Brahmā's boon, Tārakāsura stays in his own kingdom......... ... 105 1