Bhagavad Gita · 18.56

सर्वकर्माण्यपि सदा कुर्वाणो मद्व्यपाश्रयः।मत्प्रसादादवाप्नोति शाश्वतं पदमव्ययम्॥

sarva-karmāṇy api sadā kurvāṇo mad-vyapāśhrayaḥ mat-prasādād avāpnoti śhāśhvataṁ padam avyayam

Though always performing all actions, one who takes refuge in Me attains by My grace the eternal, imperishable abode.

— Bhagavad Gita 18.56

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)