AVŚ 19.26.4
यद् वेद राजा वरुणो वेद देवो बृहस्पतिः । इन्द्रो यद् वृत्रहा वेद तत् त आयुष्यं भुवत् तत् ते वर्चस्यं भुवत् ॥४॥
yad veda rājā varuṇo veda devo bṛhaspatiḥ | indro yad vṛtrahā veda tat ta āyuṣyaṃ bhuvat tat te varcasyaṃ bhuvat ||4||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
What king Varuṇa knows, [what] divine Bṛihaspati knows, what Indra the Vṛitra-slayer knows,—may that be for thee life-giving, may that be for thee splendor-giving.
Translated by William Dwight Whitney (1905)