RV 4.28.1
त्वा युजा तव तत् सोम सख्य इन्द्रो अपो मनवे सस्रुतस् कः । अहन्न् अहिम् अरिणात् सप्त सिन्धून् अपावृणोद् अपिहितेव खानि ॥
tvā yujā tava tat soma sakhya indro apo manave sasrutas kaḥ | ahann ahim ariṇāt sapta sindhūn apāvṛṇod apihiteva khāni ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
Allied with thee, in this thy friendship, Soma, Indra for man made waters flow together, Slew Ahi, and sent forth the Seven Rivers, and opened as it were obstructed fountains.
Translated by Ralph T. H. Griffith (1896)