RV 1.116.12
तद् वां नरा सनये दंस उग्रम् आविष् कृणोमि तन्यतुर् न वृष्टिम् । दध्यङ् ह यन् मध्व् आथर्वणो वाम् अश्वस्य शीर्ष्णा प्र यद् ईम् उवाच ॥
tad vāṃ narā sanaye daṃsa ugram āviṣ kṛṇomi tanyatur na vṛṣṭim | dadhyaṅ ha yan madhv ātharvaṇo vām aśvasya śīrṣṇā pra yad īm uvāca ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
That mighty deed of yours, for gain, O Heroes, as thunder heraldeth the rain, I publish, When, by the horse's head, Atharvan's offspring Dadhyac made known to you the Soma's sweetness.
Translated by Ralph T. H. Griffith (1896)