Bhagavad Gita 18.56

Relying on Me in all his actions and doing them for My sake, he attains, by My grace, eternal and unchangeable life.

सर्वकर्माण्यपि सदा कुर्वाणो मद्व्यपाश्रयः।मत्प्रसादादवाप्नोति शाश्वतं पदमव्ययम्॥

sarvakarmāṇyapi sadā kurvāṇo madvyapāśrayaḥ|matprasādādavāpnoti śāśvataṃ padamavyayam||

English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).