Mahabharata 7.167.32
गुरुं मे यत्र पाञ्चाल्यः केशपक्षे परामृशत्तन्न जातु क्षमेद्द्रौणिर्जानन्पौरुषमात्मनः
guruṃ me yatra pāñcālyaḥ keśapakṣe parāmṛśattanna jātu kṣameddrauṇirjānanpauruṣamātmanaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book