Verse 53 of Surah Az-Zumar, often called the most hopeful verse in the Quran.
Allah tells those who have wronged themselves not to lose hope in His mercy, for He forgives all sins. It is a direct, comforting reminder that the door of repentance stays open. Scholars have long pointed to it as one of the most reassuring verses for anyone weighed down by past mistakes.
- 39:53
۞ قُلْ يَٰعِبَادِىَ ٱلَّذِينَ أَسْرَفُوا۟ عَلَىٰٓ أَنفُسِهِمْ لَا تَقْنَطُوا۟ مِن رَّحْمَةِ ٱللَّهِ ۚ إِنَّ ٱللَّهَ يَغْفِرُ ٱلذُّنُوبَ جَمِيعًا ۚ إِنَّهُۥ هُوَ ٱلْغَفُورُ ٱلرَّحِيمُ
Qul yaa'ibaadiyal lazeena asrafoo 'alaaa anfusihim laa taqnatoo mirrahmatil laah; innal laaha yaghfiruz zunooba jamee'aa; innahoo Huwal Ghafoorur Raheem
（你说：）我的过分自害的众仆呀！你们对真主的恩惠不要绝望，真主必定赦宥一切罪过，他确是至赦的，确是至慈的。