Bhagavad Gita Chapter 9.31
kṣipraḿ bhavati dharmātmā
śaśvac-chāntiḿ nigacchati
kaunteya pratijānīhi
na me bhaktaḥ praṇaśyati
Translation
He quickly becomes righteous and attains lasting peace. O son of Kunti, declare it boldly that My devotee never perishes.