Bhagavad Gita · 18.65

मन्मना भव मद्भक्तो मद्याजी मां नमस्कुरु।मामेवैष्यसि सत्यं ते प्रतिजाने प्रियोऽसि मे॥

man-manā bhava mad-bhakto mad-yājī māṁ namaskuru mām evaiṣhyasi satyaṁ te pratijāne priyo 'si me

Fix your mind on Me, be devoted to Me, sacrifice to Me, bow down to Me. You shall come to Me alone. I promise you truly, for you are dear to Me.

— Bhagavad Gita 18.65

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