Mahabharata 12.15.40
चरेयुर्नाश्रमे धर्मं यथोक्तं विधिमाश्रिताःन विद्यां प्राप्नुयात्कश्चिद्यदि दण्डो न पालयेत्
careyurnāśrame dharmaṃ yathoktaṃ vidhimāśritāḥna vidyāṃ prāpnuyātkaścidyadi daṇḍo na pālayet
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book