retah-semina; tasmat-from that; apah-the god who presides over the waters; asan-appeared; nirabhidyata-was manifested; vai-indeed; gudam-an anus; gudad-from the anus; apanah-the organ of defecation; apanat-from the organ of defecation; ca-and; mrtyuh-death; loka-bhayam-karah-causing fear throughout the universe.