Bhagavad Gita 4.39
श्रद्धावाँल्लभते ज्ञानं तत्परः संयतेन्द्रियः। ज्ञानं लब्ध्वा परां शान्तिमचिरेणाधिगच्छति।।4.39।।
śraddhāvā~llabhate jñānaṃ tatparaḥ saṃyatendriyaḥ| jñānaṃ labdhvā parāṃ śāntimacireṇādhigacchati||4.39||
shraddhava~llabhate jnanam tatparah samyatendriyah jnanam labdhva param shantimacirenadhigacchati4.39
Meaning
One who has faith, who is devoted, and who has mastered the senses, attains divine knowledge. Having attained knowledge, one quickly reaches supreme peace.
श्रद्धावान्, तत्पर और जितेन्द्रिय पुरुष ज्ञान प्राप्त करता है। ज्ञान को प्राप्त करके शीघ्र ही वह परम शान्ति को प्राप्त होता है।
This is verse 39 of 42 in Chapter 4 (Jnana Karma Sanyasa Yoga) of the Bhagavad Gita.