Atharvaveda 20.95.1

20.95.1

tríkadrukeṣu mahiṣó yávāśiraṃ tuviśúṣmas tr̥pát sómam apibad víṣṇunā sutáṃ yathā́vaśat |
sá īṃ mamāda máhi kárma kártave mahā́m urúṃ sáinaṃ saścad devó deváṃ satyám índraṃ satyá índuḥ ||1||

From the three jars the Great and Strong hath drunk drink blent with meal. With Vishnu hath he quaffed the flowing Soma juice, all that he would. That hath so heightened him the Great, the Vast, to do his mighty work. So may the God attend the God, true Indu Indra who is true.