Verse 21

संवित्संरोधने श्रेयः परमं विद्धि राघव ।कारणाक्रमणं यत्र क्षोभस्तत्र न विद्यते

In plain words

Know, O Rāghava, that the highest good lies in the restraining of saṃvit: where the cause is trodden down, there no disturbance exists.