Mahabharata 14.51.15
विदितो मेऽसि दुर्धर्ष नारदाद्देवलात्तथाकृष्णद्वैपायनाच्चैव तथा कुरुपितामहात्
vidito me'si durdharṣa nāradāddevalāttathākṛṣṇadvaipāyanāccaiva tathā kurupitāmahāt
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book