RV 10.73.10
अश्वाद् इयायेति यद् वदन्त्य् ओजसो जातम् उत मन्य एनम् । मन्योर् इयाय हर्म्येषु तस्थौ यतः प्रजज्ञ इन्द्रो अस्य वेद ॥
aśvād iyāyeti yad vadanty ojaso jātam uta manya enam | manyor iyāya harmyeṣu tasthau yataḥ prajajña indro asya veda ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
When others call him offspring of the Courser, my meaning is that Mighty Power produced him. He came from Manyu and remained in houses: whence he hath sprung is known to Indra only.
Translated by Ralph T. H. Griffith (1896)