Mahabharata 5.173.11
ततस्तत्र महानासीद्ब्राह्मणः संशितव्रतःशैखावत्यस्तपोवृद्धः शास्त्रे चारण्यके गुरुः
tatastatra mahānāsīdbrāhmaṇaḥ saṃśitavrataḥśaikhāvatyastapovṛddhaḥ śāstre cāraṇyake guruḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book