How can the transformation of penitents' evil deeds into good deeds and their being made equal to those who have not sinned be reconciled with God's principle of justice, which wrongs no one even by an atom's weight?

Scholars differed concerning the meaning of Allah's replacing the bad deeds of the repentant with good deeds. Some are of the opinion that Allah grants him success in performing good deeds that erase his sins. Others are of the opinion that it is a real transformation of bad deeds into good deeds. There is no injustice in this to anyone, for Allah multiplies good deeds for those who did not commit sins, and the ranks and degrees of people with Him are known to none but Him. Allah is described as Just, and He wrongs no one. His preference for some people may be a grace from Him that He bestows upon whom He wills, as in the multiplication of the rewards of the Ummah of Muhammad (peace be upon him). They also differed as to which is better: the repentant after his repentance, or one who never sinned. The correct view is that this varies according to the servant's journey towards Allah. One must be certain of Allah Almighty's perfect justice, and that the transformation of bad deeds into good deeds is a grace from Him. Satan should not deceive anyone into committing sins under the pretext of repenting from them, for this is a false delusion.