RV 10.122.7
त्वाम् इद् अस्या उषसो व्युष्टिषु दूतं कृण्वाना अयजन्त मानुषाः । त्वां देवा महयाय्याय वावृधुर् आज्यम् अग्ने निमृजन्तो अध्वरे ॥
tvām id asyā uṣaso vyuṣṭiṣu dūtaṃ kṛṇvānā ayajanta mānuṣāḥ | tvāṃ devā mahayāyyāya vāvṛdhur ājyam agne nimṛjanto adhvare ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
They who at flushing of this dawn appointed thee their messenger, these men have paid thee reverence. Gods strengthened thee for work that must be glorified, Agni, while they made butter pure for sacrifice.
Translated by Ralph T. H. Griffith (1896)