Mahabharata 12.329.10

ब्राह्मणानां मतिर्वाक्यं कर्म श्रद्धा तपांसि चधारयन्ति महीं द्यां च शैत्याद्वार्यमृतं यथा

brāhmaṇānāṃ matirvākyaṃ karma śraddhā tapāṃsi cadhārayanti mahīṃ dyāṃ ca śaityādvāryamṛtaṃ yathā

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