RV 2.12.10
यः शश्वतो मह्य् एनो दधानान् अमन्यमानाञ् छर्वा जघान । यः शर्धते नानुददाति शृध्यां यो दस्योर् हन्ता स जनास इन्द्रः ॥
yaḥ śaśvato mahy eno dadhānān amanyamānāñ charvā jaghāna | yaḥ śardhate nānudadāti śṛdhyāṃ yo dasyor hantā sa janāsa indraḥ ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
He who hath smitten, ere they knew their danger, with his hurled weapon many grievous sinners; Who pardons not his boldness who provokes him, who slays the Dasyti, He, O men, is Indra.
Translated by Ralph T. H. Griffith (1896)