Bhagavatapurana 4.7.56

4.7.56

rudraṃ ca svena bhāgena hy upādhāvat samāhitaḥ /
karmaṇodavasānena somapān itarān api /
udavasya sahartvigbhiḥ sasnāv avabhṛthaṃ tataḥ //

56. In steady devotion he waited upon Rudra with the share due to him; and also waited upon those that drank the Soma juice as well as others with the concluding rite; after having thus concluded the sacrifice he performed the sacred ablutions called Avabhrita along with the priests.