Śatapatha Brāhmaṇa ("of a hundred paths") 1.6.3.8

1.6.3.8

sa tvaṣṭā cukrodha kuvinme 'nupahūtaḥ somamababhakṣaditi sasvayameva yajñaveśasa cakre sa yo droṇakalaśe śukraḥ pariśiṣṭa āsa ta pravartayāṃ cakārendraśatrurvardhasveti so'gnimeva prāpya sambabhūvāntaraiva sambabhūvetyu haika āhuḥ so 'gnīṣomāvevābhisambabhūva sarvā vidyāḥ sarvaṃ yaśaḥ sarvamannādyaṃ sarvāṃ śrīṃ

Tvashtri was furious, and exclaimed, 'Has he indeed consumed my Soma uninvited?' However, he himself desecrated the sacrifice, for what pure (Soma) there was left in the tub he let flow (into the fire), saying, 'Grow thou, having Indra for thy foe!' The moment it reached the fire, it developed (into human shape), or, as some say, it so developed whilst on its way (to the fire). It became possessed of Agni and Soma, of all sciences, all glory, all nourishment, all prosperity.