SB 10.84.53

patnī-saṁyājāvabhṛthyaiś
 caritvā te maharṣayaḥ
sasnū rāma-hrade viprā
 yajamāna-puraḥ-sarāḥ
Synonyms: 
patnī-saṁyāja — the ritual in which the sponsor of the sacrifice offers oblations together with his wife; avabhṛthyaiḥ — and the final rituals, known as avabhṛthya; caritvā — having executed; te — they; mahāṛṣayaḥ — the great sages; sasnuḥ — bathed; rāma — of Lord Paraśurāma; hrade — in the lake; viprāḥ — brāhmaṇas; yajamāna — the sponsor of the sacrifice (Vasudeva); puraḥ-sarāḥ — placing in front.
Translation: 
After supervising the patnī-saṁyāja and avabhṛthya rituals, the great brāhmaṇa sages bathed in Lord Paraśurāma’s lake with the sponsor of the sacrifice, Vasudeva, who led them.