Bhagavad Gita 9.31

क्षिप्रं भवति धर्मात्मा शश्वच्छान्तिं निगच्छति।कौन्तेय प्रतिजानीहि न मे भक्तः प्रणश्यति ॥९.३१॥

kṣipraṃ bhavati dharmātmā śaśvacchāntiṃ nigacchatikaunteya pratijānīhi na me bhaktaḥ praṇaśyati

Soon he becomes righteous and attains eternal peace; O Arjuna, proclaim thou for certain that My devotee never perishes.

गीता