An Najm V1-62
Those who avoid the major sins and immoralities, only [committing] slight ones. Indeed, your Lord is vast in forgiveness. He was most knowing of you when He produced you from the earth and when you were fetuses in the wombs of your mothers. So do not claim yourselves to be pure; He is most knowing of who fears Him. [An Najm:32]
To me this is a reward of its own. Sometimes we try so hard to avoid the big sins but along the way we are making the smaller ones. This verse gives me hope that Allah (swt) will forgive for those sins if we are truly sincere.