Bhagavad Gita 18.55

भक्त्या मामभिजानाति यावान्यश्चास्मि तत्त्वतः।ततो मां तत्त्वतो ज्ञात्वा विशते तदनन्तरम् ॥१८.५५॥

bhaktyā māmabhijānāti yāvānyaścāsmi tattvataḥtato māṃ tattvato jñātvā viśate tadanantaram

By devotion, he knows Me in truth, who and what I am; then, having known Me in truth, he immediately enters into the Supreme.

गीता