Verse 31

तत्पूजनेन कष्टेन तपसा तस्य राघव ।काले निर्मलतामेति चित्तं वैराग्यकारिणा

In plain words

By that worship of him, Rāghava -- arduous, a tapas, bringing about vairāgya -- in time the citta comes to purity.