Skandapurana 5.133.45

5.133.45

manastāpādvrajetpāpaṃ mānasaṃ vācikaṃ ca yat ..
tasya prasādanenaiva yasyopari vijalpitam .. 45 ..

Mental sin is dispelled through remorse; and that which is verbal / is dispelled only through the appeasement of the person against whom it was spoken;