Agniveshyagrihyasutra 2.3.5.12

2.3.5.12

atha taṇḍulamādāya vasavastvā rudraiḥ purastāt pāntu sarpirgrīvī pīvaryasya jāyā āśiṣamevaitāmāśāste pūrṇapātre navo navo bhavati jāyamānaḥ triyambakaṃ yajāmahe viṣṇo tvanno antamaḥ viṣṇornukaṃ vīryāṇi pravocam ityevamādiṛgyajurbhiḥ rakṣāṃ karoti \

Then, having taken the husked rice, he performs the protection with verses and formulas such as: "May the Vasus with the Rudras protect you from the east...", "She whose neck is smeared with clarified butter, the plump wife of this one...", "He prays for this blessing at the full cup...", "New and newer he becomes as he is born...", "We sacrifice to Tryambaka...", "O Viṣṇu, you are nearest to us...", and "Now I proclaim the heroic deeds of Viṣṇu..."