Mahabharata 10.6.22

मत्तोन्मत्तप्रमत्तेषु न शस्त्राण्युपधारयेत्इत्येवं गुरुभिः पूर्वमुपदिष्टं नृणां सदा

mattonmattapramatteṣu na śastrāṇyupadhārayetityevaṃ gurubhiḥ pūrvamupadiṣṭaṃ nṛṇāṃ sadā

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