yei sūtre—in the codes of Vedānta-sūtra; yei—whatever; ṛk—Vedic mantra; viṣaya-vacana—subject matter to be explained; bhāgavate—in Śrīmad-Bhāgavatam; sei ṛk—that same Vedic mantra; śloke—in eighteen thousand verses; nibandhana—compiling.