Forgiveness for All Previous Sins

When someone converts to Islam, God forgives all of his
previous sins and evil deeds. A man called Amr came to the
Prophet Muhammad and said: “Give me your right hand so
that I may give you my pledge of loyalty.” The Prophet
stretched out his right hand. Amr withdrew his hand. The
Prophet said: { What has happened to you, O Amr? } He
replied: “I intend to lay down a condition.” The Prophet
asked: { What condition do you intend to put forward? } Amr
said: “That God forgive my sins.” The Prophet said:
{ Didn’t you know that converting to Islam erases all previous
sins? }2
After converting to Islam, the person will be rewarded for his
or her good and bad deeds according to the following saying of the
Prophet Muhammad : { 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 God will wipe it out. }3