وَإِذَا جَاءكَ الَّذِينَ يُؤْمِنُونَ بِآيَاتِنَا فَقُلْ سَلاَمٌ عَلَيْكُمْ كَتَبَ رَبُّكُمْ عَلَى نَفْسِهِ الرَّحْمَةَ أَنَّهُ مَن عَمِلَ مِنكُمْ سُوءًا بِجَهَالَةٍ ثُمَّ تَابَ مِن بَعْدِهِ وَأَصْلَحَ فَأَنَّهُ غَفُورٌ رَّحِيمٌ
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سورة الأنعام
(6/54) And when those who believe in Our signs come unto them, say thou: peace be on you; your Lord hath prescribed mercy for Himself; so that whosoever of you doeth an evil through Ignorance, then repenteth thereafter and amendeth, then verily He is Forgiving, Merciful.
Surah Al-An'am