Mahabharata 12.92.20
यदि नात्मनि पुत्रेषु न चेत्पौत्रेषु नप्तृषुन हि पापं कृतं कर्म सद्यः फलति गौरिव
yadi nātmani putreṣu na cetpautreṣu naptṛṣuna hi pāpaṃ kṛtaṃ karma sadyaḥ phalati gauriva
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book