What is the meaning of 'me'avir al midotav,' and what is its reward?

Greetings, It is written in Tractate Rosh Hashanah (17a), "Whoever 'me'avir al midotav,' the Heavenly Court forgives him for all his transgressions." Rashi there explains that 'me'avir al midotav' means that the person does not exact measure for measure when someone wrongs him but rather overlooks and lets it go. Therefore, he merits a measure for a measure; just as the person overlooks and lets go, so too does Hashem overlook all his transgressions, meaning that the attribute of strict judgment does not rigorously pursue his sins but rather lets them pass. Blessings, Hillel Meirs