Bhagavad Gita · 8.22

पुरुषः स परः पार्थ भक्त्या लभ्यस्त्वनन्यया।यस्यान्तःस्थानि भूतानि येन सर्वमिदं ततम्॥

puruṣhaḥ sa paraḥ pārtha bhaktyā labhyas tv ananyayā yasyāntaḥ-sthāni bhūtāni yena sarvam idaṁ tatam

That Supreme Person, O Partha, in whom all beings reside and by whom all this is pervaded, is attainable through exclusive devotion.

— Bhagavad Gita 8.22

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