Mahabharata 14.49.17
सहस्रेणापि दुर्मेधा न वृद्धिमधिगच्छतिचतुर्थेनाप्यथांशेन बुद्धिमान्सुखमेधते
sahasreṇāpi durmedhā na vṛddhimadhigacchaticaturthenāpyathāṃśena buddhimānsukhamedhate
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book