Mahabharata 12.238.10

चित्तप्रसादेन यतिर्जहाति हि शुभाशुभम्प्रसन्नात्मात्मनि स्थित्वा सुखमानन्त्यमश्नुते

cittaprasādena yatirjahāti hi śubhāśubhamprasannātmātmani sthitvā sukhamānantyamaśnute

Our plain-language meaning of this verse is waiting for scholar review.