Mahabharata 12.55.14

भीष्म उवाच · bhīṣma uvāca

ब्राह्मणानां यथा धर्मो दानमध्ययनं तपःक्षत्रियाणां तथा कृष्ण समरे देहपातनम्

brāhmaṇānāṃ yathā dharmo dānamadhyayanaṃ tapaḥkṣatriyāṇāṃ tathā kṛṣṇa samare dehapātanam

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