Shatapatha Brahmana 11.6.1.13

11.6.1.13

atha ya ene so'ntareṇa puruṣaḥ kṛṣṇaḥ piṅgākṣo daṇḍapāṇirasthātkrodho vai so'bhūtsa yatsrucyapa ānīya ninayati tena krodhamavarunddhe tena krodhaṃ jayati sa ya evaṃ vidvānagnihotraṃ juhoti tena sarvaṃ jayati sarvamavarunddhe

'And as to the black man with yellow eyes, who was standing between them with a staff in his hand, he was Wrath: when, having poured water into the spoon, one pours (the libation into the fire), he subdues Wrath, and conquers Wrath; and, verily, whosoever, knowing this, offers the Agnihotra, thereby conquers everything, and subdues everything.'