Mahabharata 13.74.36
ब्रह्मचर्यं दहेद्राजन्सर्वपापान्युपासितम्ब्राह्मणेन विशेषेण ब्राह्मणो ह्यग्निरुच्यते
brahmacaryaṃ dahedrājansarvapāpānyupāsitambrāhmaṇena viśeṣeṇa brāhmaṇo hyagnirucyate
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book