Garudapurana 1.214.14

1.214.14

tato 'bhiṣiñcenmantraistu varuṇaistu yathākramam /
imaṃme varuṇe dvābhyāṃ tvannaḥ satvanna ityapi //

Then one should sprinkle oneself with the mantras addressed to Varuṇa in their proper order:
with the two verses beginning, “Listen to this, O Varuṇa,” and also “So do thou to us,” and “Thou to us”;