Tirukforbearance,thirukkural-On Virtue-Forbearance-forbearance,thirukkural 152

It is essential to counter wrongs with forbearance, But better still to forget them altogether.

Even when people cross the bounds of decency and fairness and wrong you, it is appropriate to practise forbearance.; but it is even superior virtue to forget it completely.

Browning's line 'Good to forgive, best to forget' conveys the same idea.

The word 'Irathal' is explained by kalinagar as 'Kadathal' or the crossing the bounds of fairness.

Valluvar's forbearance,thirukkural 108 is another version of this idea in a different context.

When Jesus said that he, who has anything against his brother, should settle these scores with forgiveness before proceeding to offer gifts at the Lord's feet, he was obviously driving home the same lesson in a different form.