Mahabharata 7.165.29

अहिंसा सर्वभूतेषु धर्मं ज्यायस्तरं विदुःतस्य च ब्राह्मणो मूलं भवांश्च ब्रह्मवित्तमः

ahiṃsā sarvabhūteṣu dharmaṃ jyāyastaraṃ viduḥtasya ca brāhmaṇo mūlaṃ bhavāṃśca brahmavittamaḥ

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