Shatapatha Brahmana 11.5.9.5

11.5.9.5

te hocuḥ adabhāma vā enāniti tasmādadābhyo na vai no'dabhanniti tasmādadābhyo vāgvā adābhyaḥ seyamadabdhā vāktasmādvevādābhya evaṃ ha vai dviṣato bhrātṛvyasya sarvaṃ yajñaṃ saṃvṛṅkta evaṃ dviṣantam bhrātṛvyaṃ sarvasmādyajñānnirbhajati bahirdhā karoti ya u evametadveda

They spake, 'Surely, we have destroyed (adabhâma) them;' whence (the cup is called) Adâbhya;--'they have not destroyed (dabh) us;' whence also (it is called) Adâbhya. And the Adâbhya being speech, this speech is indestructible, whence also it is (called) Adâbhya; and, verily, in like manner does he who knows this possess himself of the whole sacrifice of his spiteful enemy, and exclude and shut out his spiteful enemy from all participation in the sacrifice.