Chapter 18 · verse 55 · gita.yoga.org
Bhagavad Gita 18.55
भक्त्या मामभिजानाति यावान्यश्चास्मि तत्त्वतः।ततो मां तत्त्वतो ज्ञात्वा विशते तदनन्तरम्
By devotion, he knows Me in truth, who and what I am; then, having known Me in truth, he immediately enters into the Supreme.