Shatapatha Brahmana 9.5.1.27

9.5.1.27

teṣu preteṣu | tṛtīyasavanamatanvata tatsamasthāpayanyatsamasthāpayaṃstatsarvaṃ satyamāpnuvaṃstato 'surā apapupruvire tato devā abhavanparāsurā bhavatyātmanā parāsya dviṣanbhrātṛvyo bhavati ya evaṃ veda

When they had gone away, they (the gods) spread the evening-service and completed it; and by completing it they obtained that whole truth. Then the Asuras went down. Then the gods prevailed, and the Asuras came to naught. And, indeed, he who knows this, himself prevails, and his spiteful enemy comes to naught.