Mahabharata 6.39.15

अनुद्वेगकरं वाक्यं सत्यं प्रियहितं च यत्स्वाध्यायाभ्यसनं चैव वाङ्मयं तप उच्यते

anudvegakaraṃ vākyaṃ satyaṃ priyahitaṃ ca yatsvādhyāyābhyasanaṃ caiva vāṅmayaṃ tapa ucyate

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