AVŚ 9.9.10
तिस्रो मतॄस् त्रीन् पितॄन् बिभ्रद् एक उर्ध्वस् तस्थौ नेम् अव ग्लापयन्त । मन्त्रयन्ते दिवो अमुष्य पृष्ठे विश्वविदो वाचम् अविश्वविन्नाम् ॥१०॥ २४
tisro matṝs trīn pitṝn bibhrad eka urdhvas tasthau nem ava glāpayanta | mantrayante divo amuṣya pṛṣṭhe viśvavido vācam aviśvavinnām ||10|| 24
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
The one, bearing three mothers [and] three fathers, stood upright; verily they do not exhaust him; on the back of yon sky the all-knowing ones talk a speech not found by all.
Translated by William Dwight Whitney (1905)