Agniveshyagrihyasutra 2.5.1.18

2.5.1.18

ā satyena agniṃ dūtaṃ vṛṇīmahe eṣāmīśe ityādityāya \

"By the truth...", "We choose Agni as messenger...", "He rules over these..."—for Āditya;