Happiness always ends in sorrow and sometimes originates from sorrow itself. He, therefore, who desires perpetual happiness must give up both.
सुखमेवहि दुःखान्तं कदाचिद् दुःखतः सुखम्। तस्मादेतद् द्वयं जह्याद् य इच्छेच्छाश्वतं सुखम्॥