Shatapatha Brahmana 1.5.4.16

1.5.4.16

pañca mameti pañcame prayāje | na tasya kiṃ cana yo 'smāndveṣṭi yaṃ ca vayaṃ dviṣma iti sa pañca pañcetyeva bhavanparābhavati tathāsya sarvaṃ saṃvṛṅkte sarvasmātsapatnānnirbhajati ya evametadveda

With the fifth fore-offering, 'Five (pañka) for me!' and 'Nothing for him who hates us and whom we hate!' For, there being 'five' to five,' he (the enemy) is defeated, and whoever knows this, appropriates to himself everything that belongs to that (enemy of his), strips his enemies of everything.