Tafsir of Surah Al-An'aam 6:54
﴿وَإِذَا جَاءَكَ الَّذِينَ يُؤْمِنُونَ بِآيَاتِنَا فَقُلْ سَلَامٌ عَلَيْكُمْ كَتَبَ رَبُّكُمْ عَلَىٰ نَفْسِهِ الرَّحْمَةَ أَنَّهُ مَنْ عَمِلَ مِنكُمْ سُوءًا بِجَهَالَةٍ ثُمَّ تَابَ مِن بَعْدِهِ وَأَصْلَحَ فَأَنَّهُ غَفُورٌ رَّحِيمٌ﴾
Translation of the meaning
And when those come to you who believe in Our verses, say, "Peace be upon you. Your Lord has decreed upon Himself mercy: that any of you who does wrong out of ignorance and then repents after that and corrects himself - indeed, He is Forgiving and Merciful."
English Translation - Noor International Center — v1.1.2 · QuranEnc.comThe words of the two imams are given in their original Arabic, verbatim, with references.
Shaykh al-Islam Ibn Taymiyyah
فهما تأكيدان مقصودان لمعنيين مختلفين ألا ترى تأكيد قوله: {غفور رحيم} ب " إن " غير تأكيد {من عمل منكم سوءا بجهالة ثم تاب من بعده وأصلح فأنه غفور رحيم} له ب " أن "«مجموع الفتاوى» 15/277What he quoted from others
الصحابة أقرّه «كل من عصى الله فهو جاهل»«مجموع الفتاوى» 14/291