ity āha mantra-dṛg ṛṣiḥ puruṣasya yasya

param-the measurement; mahimnah-of the glories; uruvikramatah-of the Supreme Personality of Godhead, who acts wonderfully; grnanah-can count; yah-a person who; parthivani-of the whole planet earth; vimame-can count; sah-he; rajamsi-the atoms; martyah-a human being who is subject to death; kim-what; jayamanah-one who will take birth in the future; uta-either; jatah-one who is already born; upaiti-can do; martyah-a person subject to death; iti-thus; aha-said; mantra-drk-who could foresee the Vedic mantras; rsih-the great saintly Vasistha Muni; purusasya-of the supreme person; yasya-of whom.