Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 4.5.10

4.5.10

sa ya icched dviṣantam bhrātṛvyam stṛṇvīya iti / (Vikṛti iṣṭayah)

iv. 7. Next as to the Çaunaka sacrifice. He who means to proceed with the Çaunaka sacrifice begins on the same full moon night; the explanation of this has been given. It is a sacrifice for one desiring to lay low (his enemies); with it should one desiring to lay low sacrifice; he who desires 'May I lay low the rival who hates me', should sacrifice with this; he lays him low indeed.