Mahabharata 12.102.2

भीष्म उवाच · bhīṣma uvāca

यथाचरितमेवात्र शस्त्रपत्रं विधीयतेआचारादेव पुरुषस्तथा कर्मसु वर्तते

yathācaritamevātra śastrapatraṃ vidhīyateācārādeva puruṣastathā karmasu vartate

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