Abu Safar narrated : A man of Quraysh broke a tooth of an Ansari. He complaind to
Sayyidina Mu’awiyah (RA) saying, “0 Amir ul-Mu’mineen, he has broken my tooth.” Muawiyah (RA) said, “We will soon make you pleased.” The other man pleaded with him till he agreed and said to him, “That is between you and your companion.” Sayyidina Abu Darda (RA) was sitting there. He said, “I had heard Allah’s Messenger (SAW) say, “If anyone suffers a bodily injury and forgives it, Allah will raise him a degree and remove a sin from him”. The Ansar asked, “Did you hear that from Allah’s Messenger (SAW). He said, “Yes my two ears heard it and my heart retained it.” He said, “Then I pardon him for that.” Muawiyah (RA) said, “There’s no wrong now, but I will not deprive you.” So, he commanded some wealth to be given to him.
[Ibn e Majah 2693, Ahmed 6899]