Bhagavad Gita 4.39

श्रद्धावाँल्लभते ज्ञानं तत्परः संयतेन्द्रियः।ज्ञानं लब्ध्वा परां शान्तिमचिरेणाधिगच्छति ॥४.३९॥

śraddhāvām̐llabhate jñānaṃ tatparaḥ saṃyatendriyaḥjñānaṃ labdhvā parāṃ śāntimacireṇādhigacchati

The one who is full of faith, devoted to it, and has subdued their senses obtains this knowledge; and upon obtaining the knowledge, they attain the supreme peace immediately.

गीता