ye maricy-adayo vipra
yas tu svayambhuvo manuh
te vai brahmana adesat
katham etad abhavayan
ye—those; marici-adayah—great sages headed by Marici; viprah—brahmanas; yah—who; tu—indeed; svayambhuvah manuh—and Svayambhuva Manu; te—they; vai—indeed; brahmanah—of Lord Brahma; adesat—by the order; katham—how; etat—this universe; abhavayan—evolved.
Vidura inquired: How did the Prajapatis [such progenitors of living entities as Marici and Svayambhuva Manu] create according to the instruction of Brahma, and how did they evolve this manifested universe?
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