Mahabharata 3.9.12

कथं वा मन्यते भीष्मो द्रोणो वा विदुरोऽपि वाभवान्वात्र क्षमं कार्यं पुरा चार्थोऽतिवर्तते

kathaṃ vā manyate bhīṣmo droṇo vā viduro'pi vābhavānvātra kṣamaṃ kāryaṃ purā cārtho'tivartate

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