Bhagavad Gita 2.53
श्रुतिविप्रतिपन्ना ते यदा स्थास्यति निश्चला।
समाधावचला बुद्धिस्तदा योगमवाप्स्यसि।।2.53।।
Shrutivipratipanna te yada sthasyati nishchala
Samadhavachala buddhistada yogamavapsyasi
Simple meaning, written by AIWhen your buddhi, no longer confused by what you have heard, stands firm and unmoving in samadhi, then you will attain yoga.