Others (there are who) have acknowledged their wrong-doings: they have mixed an act that was good with another that was evil. Perhaps Allah will turn unto them (in Mercy): for Allah is Oft-Forgiving, Most Merciful. (102)
Tafsir
The proof of sincere repentance is a greater urge to serve the cause of religion. To absolve themselves of sin, they offered a part of their cherished property for the cause of God. On seeing such a positive response from them, the Prophet was asked not to reproach them but rather to give them psychological support, pray for them so that the burden (of guilt) in their hearts was lightened and their confidence in their faith restored. Doing wrong is not the real evil in the eyes of God; persistence in that wrong is the real evil. One who begins to justify his wrongs ruins himself, while one who admits his mistakes and tries his best to atone for them with good deeds is worthy of being pardoned by God.
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