RV 1.163.10
ईर्मान्तासः सिलिकमध्यमासः सं शूरणासो दिव्यासो अत्याः । हंसा इव श्रेणिशो यतन्ते यद् आक्षिषुर् दिव्यम् अज्मम् अश्वाः ॥
īrmāntāsaḥ silikamadhyamāsaḥ saṃ śūraṇāso divyāso atyāḥ | haṃsā iva śreṇiśo yatante yad ākṣiṣur divyam ajmam aśvāḥ ||
Devanagari rendered by HREEM from the edition's roman (IAST) text; the IAST is the edition's own.
Symmetrical in flank, with rounded haunches, mettled like heroes, the Celestial Coursers Put forth their strength, like swans in lengthened order, when they, the Steeds, have reached the heavenly causeway.
Translated by Ralph T. H. Griffith (1896)