RV 1.121.12
त्वम् इन्द्र नर्यो यां अवो नॄन् तिष्ठा वातस्य सुयुजो वहिष्ठान् । यं ते काव्य उशना मन्दिनं दाद् वृत्रहणम् पार्यं ततक्ष वज्रम् ॥
tvam indra naryo yāṃ avo nṝn tiṣṭhā vātasya suyujo vahiṣṭhān | yaṃ te kāvya uśanā mandinaṃ dād vṛtrahaṇam pāryaṃ tatakṣa vajram ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
Mount Indra, lover of the men thou guardest, the well-yoked horses of the wind, best bearers. The bolt which Kavya Usana erst gave thee, strong, gladdening, Vrtra-slaying, hath he fashioned.
Translated by Ralph T. H. Griffith (1896)