Mahabharata 4.64.22
स हि शारद्वतं द्रोणं द्रोणपुत्रं च वीर्यवान्सूतपुत्रं च भीष्मं च चकार विमुखाञ्शरैः
sa hi śāradvataṃ droṇaṃ droṇaputraṃ ca vīryavānsūtaputraṃ ca bhīṣmaṃ ca cakāra vimukhāñśaraiḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book