Intro
Roughly 1400 years ago, individuals committed a horrendous crime and added two false verses to the end of Sura 9 (Barã’ah), verses 128 and 129.
[9:128] There has certainly come to you a Messenger from among yourselves. Grievous to him is what you suffer; [he is] concerned over you [i.e., your guidance] and to the believers is kind and merciful. لَقَدْ جَآءَكُمْ رَسُولٌۭ مِّنْ أَنفُسِكُمْ عَزِيزٌ عَلَيْهِ مَا عَنِتُّمْ حَرِيصٌ عَلَيْكُم بِٱلْمُؤْمِنِينَ رَءُوفٌۭ رَّحِيمٌۭ [9:129] But if they turn away, [O Muḥammad], say, "Sufficient for me is Allāh; there is no deity except Him. On Him I have relied, and He is the Lord of the Great Throne." فَإِن تَوَلَّوْا۟ فَقُلْ حَسْبِىَ ٱللَّهُ لَآ إِلَـٰهَ إِلَّا هُوَ ۖ عَلَيْهِ تَوَكَّلْتُ ۖ وَهُوَ رَبُّ ٱلْعَرْشِ ٱلْعَظِيمِ
God, being All-Knowing, already warned the followers of the Quran of such deliberate schemes in the preceding verse to which they added these two false sentences.
9:127 Whenever a sura was revealed, some of them would look at each other as if to say: “Does anyone see you?” Then they left. Thus, GOD has diverted their hearts, for they are people who do not comprehend. وَإِذَا مَا أُنْزِلَتْ سُورَةٌ نَظَرَ بَعْضُهُمْ إِلَىٰ بَعْضٍ هَلْ يَرَاكُمْ مِنْ أَحَدٍ ثُمَّ انْصَرَفُوا صَرَفَ اللَّهُ قُلُوبَهُمْ بِأَنَّهُمْ قَوْمٌ لَا يَفْقَهُونَ