buddhim casya vinirbhinnam
buddhim-intelligence; ca-also; asya-of the gigantic form; vinirbhinnam-being separately manifested; vagisah-Brahma, lord of the Vedas; dhisnyam-the controlling power; avisat-entered in; bodhena amsena-with his part of intelligence; boddhavyam-the matter of understanding; pratipattih-understood; yatah-by which; bhavet-so becomes.