Hadith About Good Deeds

The Prophet Muhammad (peace be upon him) said, "Your Lord, Who is blessed and exalted, is most merciful. If someone intends to do a good deed but does not do it, a good deed will be recorded for him. And if he does do it, (a reward of) ten to seven hundred or many more times (the reward of the good deed), will be recorded for him. And if someone intends to do a bad deed but does not do it, a good deed will be recorded for him. And if he does do it, a bad deed will be recorded against him or Allah will wipe it out."
[Muslim]