anyayāvartate punaḥ

sukla-light; krsne-darkness; gati-passing away; hi-certainly; ete-all these; jagatah-of the material world; sasvate-the Vedas; mate-in the opinion; ekaya-by one; yati-goes; anavrttim-no return; anyaya-by the other; avartate-comes back; punah-again.