Śatapatha Brāhmaṇa ("of a hundred paths") 3.7.4.1

3.7.4.1

pāśaṃ kṛtvā pratimuñcati | ṛtasya tvā devahaviḥ pāśena pratimuñcāmīti varuṇyā vā eṣā yadrajjustadenametadṛtasyaiva pāśe pratimuñcati tatho hainameṣā varuṇyā rajjurna hinasti

Having made a noose, he throws it over (the victim) with (Vâg. S. VI, 8), 'With the noose of sacred order I bind thee, O oblation to the gods!' for that rope, forsooth, is Varuna's: therefore he thus binds it with the noose of sacred order, and thus that rope of Varuna does not injure it.