Mayamatam 9.109

9.109

vājīśvetamayaḥ some rājato dvijarājakaḥ
īśe vaikṛntamanale trapusīsaṃ tunairṛte

in Soma, a white horse, and the king of the twice-born (the Moon) made of silver; / in Īśa, steel (vaikṛnta); in Agni, tin; and lead in Nirṛti;