Mahabharata 1.118.5

वैशंपायन उवाच · vaiśaṃpāyana uvāca

विदुरस्तं तथेत्युक्त्वा भीष्मेण सह भारतपाण्डुं संस्कारयामास देशे परमसंवृते

vidurastaṃ tathetyuktvā bhīṣmeṇa saha bhāratapāṇḍuṃ saṃskārayāmāsa deśe paramasaṃvṛte

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