Mahabharata 7.172.8
न भूतपूर्वं बीभत्सोर्वाक्यं परुषमीदृशम्अथ कस्मात्स कौन्तेयः सखायं रूक्षमब्रवीत्
na bhūtapūrvaṃ bībhatsorvākyaṃ paruṣamīdṛśamatha kasmātsa kaunteyaḥ sakhāyaṃ rūkṣamabravīt
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book