Bhagavad Gita: Chapter 2, Verse 65

प्रसादे सर्वदुःखानां हानिरस्योपजायते ।
प्रसन्नचेतसो ह्याश‍ु बुद्धिः पर्यवतिष्ठते ॥ २-६५ ॥

prasāde sarva-duḥkhānāṁ hānir asyopajāyate
prasanna-cetaso hy āśu buddhiḥ paryavatiṣṭhate 2.65

For one thus satisfied, the threefold miseries of material existence exist no longer; in such satisfied consciousness, one’s intelligence is soon well established.