yat kāyam abhicakṣate

evam-thus; yukta-contemplating; krtah-while doing so; tasya-his; daivam-supernatural power; ca-also; aveksatah-observing; tada-at that time; kasya-of Brahma; rupam-form; abhut-became manifested; dvedha-twofold; yat-which is; kayam-his body; abhicaksate-is said to be.