Mahabharata 14.47.4

तपसा क्षेममध्वानं गच्छन्ति परमैषिणःसंन्यासनिरता नित्यं ये ब्रह्मविदुषो जनाः

tapasā kṣemamadhvānaṃ gacchanti paramaiṣiṇaḥsaṃnyāsaniratā nityaṃ ye brahmaviduṣo janāḥ

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