Matsyapurana 146.6

146.6

tataste brahmaṇo 'bhyāśaṃ jagmurbhayanipīḍitāḥ
bhītāṃśca tridaśāndṛṣṭvā brahmā teṣāmuvāca ha //

In reply, Bhagavâna Matsya said that in ancient times there was a demon by the name of Vajrâṅga whose son was the highly powerful Târkâsura That valiant Târkâsura drove away all the Devas from their respective dwellings who, instilled with consternation, went to seek the shelter of Brahmâ Brahmâ, on seeing those terror stricken Devas said — "Devas! cast off your fears Swâmikârtika, the son of Śiva, born of the daughter of the Himâlaya, will destroy the Dânava" Sometime after, Śiva, on seeing Pârvatî, dropped his semen virile for some reason in the mouth of Fire which gave satisfaction to the Devas Afterwards, the semen virile came out undigested from the stomach of the Devas and fell into the celestial river whence it was carried to a thicket of reeds Out of which was brought forth Swâmikârtika shining like the sun That seven days' old baby killed Târakâsura.—5 11