RV 1.166.5
यत् त्वेषयामा नदयन्त पर्वतान् दिवो वा पृष्ठं नर्या अचुच्यवुः । विश्वो वो अज्मन् भयते वनस्पती रथीयन्तीव प्र जिहीत ओषधिः ॥
yat tveṣayāmā nadayanta parvatān divo vā pṛṣṭhaṃ naryā acucyavuḥ | viśvo vo ajman bhayate vanaspatī rathīyantīva pra jihīta oṣadhiḥ ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
When they in dazzling rush have made the mountains roar, and shaken heaven's high back in their heroic strength, Each sovran of the forest fears as ye drive near, aid the shrubs fly before you swift as whirling wheels.
Translated by Ralph T. H. Griffith (1896)