Mahabharata 6.106.16

तथा पाण्डुसुतं ज्येष्ठं भीष्मस्य वधकाङ्क्षिणम्भारद्वाजो रणे यत्तो धर्मपुत्रमवारयत्

tathā pāṇḍusutaṃ jyeṣṭhaṃ bhīṣmasya vadhakāṅkṣiṇambhāradvājo raṇe yatto dharmaputramavārayat

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