Atharvaveda 12.4.53

12.4.53

yádi hutáṃ yády áhutām amā́ ca pácate vaśā́m |
devā́nt sábrāhmaṇān r̥tvā́ jihmó lokā́n nír r̥chati ||53||

If as offered (hu) and if as unoffered one cooks the cow ⌊vaçā́⌋ in private (amā́), coming into collision with the gods accompanied by the Brahmans, he goes supine (jihmá) out of the world.
⌊Here ends the fourth anuvāka, with 1 hymn and 53 verses. The quoted Anukr. says saptabhir ūnā tu “vaçāḥ," i.e. 'the cows[-hymn] is a [sixty] deficient by seven.'⌋