Mahabharata 5.54.9
ऋते च विदुरं सर्वे यूयं वध्या महात्मनःधृतराष्ट्रश्च धर्मज्ञो न वध्यः कुरुसत्तमः
ṛte ca viduraṃ sarve yūyaṃ vadhyā mahātmanaḥdhṛtarāṣṭraśca dharmajño na vadhyaḥ kurusattamaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book