بیشترتوضیحاتافزودن یادداشت جدید quotes Abu Baseer who narrates from Imam Ja'far- as Sadiq (A.S.) that he said, "Disbelief (kufr) has three roots (foundations) : greed, pride, and jealousy". And as these roots start gaining strength, faith starts moving away and good deeds go waste. Thus man becomes a fuel for the fire of hell. Shaitaan's good deeds lay wasted because of his pride. But he was given a long span of life in compensation for his (good) deeds. The whole narration is stated in the Qur'an. Takfeer (Expiation of sins): It means that the sins which a person commits are compensated for acceptance of faith (Eeman) destroys all the sins committed in the past. If a person was a non-believer in the former part of life, but later accepted Islam, then the sins which he committed during that period will be forgiven and will not be taken into, the sin he committed during that period will be forgiven if he truly repents and seeks pardon. It is stated in the Qur'an: "Allah changes the evil deeds to good ones". (surah-al-Furqan : 70) It is written in the fifteenth volume of Biharul-Anwaar', that once a man came to the presence of the Holy prophet Mohammad (S.A.W.S.) . and said, "O master my sin is very big (in his pre-Islamic days he had buried his daughter alive as was the custom then), you recommend to me a deed whose performance would act as compensation for it, and Allah may forgive me". The prophet (S.A.W.S.) asked