﴿ وَمَن تَابَ وَعَمِلَ صَٰلِحًۭا فَإِنَّهُۥ يَتُوبُ إِلَى ٱللَّهِ مَتَابًۭا ﴾

“and seeing that he who repents and [thenceforth] does what is right has truly turned unto God by [this very act of] repent­ance.”

Real virtue in the eyes of God is a man’s becoming God-fearing. Any virtue which makes a man fearless of God is, in fact, a sin, while that sin which makes a man God-fearing is in fact, in terms of its result, a virtue. If a man happens to commit a sin but later on, seeing the error of his ways rushes towards Him in repentance (tawbah) and seeks His pardon, then God will mercifully add this sin to the list of his virtues, because that had made him turn towards Him.