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

Merge thy mind in Me, be my devotee, sacrifice to Me, prostrate thyself before Me, thou shalt come even to Me. I pledge thee My troth; thou art dear to Me.

In plain words: Krishna tells Arjuna to fill his mind with Krishna, love him, offer worship to him, and bow to him. Krishna promises that Arjuna will surely come to him, because Arjuna is dear to him.