Sura 33 Al-Ahzab (Those who took up arms), ayah 71

1. يُصْلِحْ لَكُمْ أَعْمَالَكُمْ وَيَغْفِرْ لَكُمْ ذُنُوبَكُمْ ۗ وَمَنْ يُطِعِ اللَّهَ وَرَسُولَهُ فَقَدْ فَازَ فَوْزًا عَظِيمًا

   He will (then) amend for you your deeds and forgive you your sins. And whoever obeys Allah and His Messenger has certainly attained a great attainment.

   33:71

Translation: Saheeh International