Narrated Al-Bara' bin 'Azib:

That the Messenger of Allah ﷺ said: "Bring me a shoulder blade or tablet." Then he wrote: Not equal are those of believers who sit. 'Amr bin Umm Maktum who was behind him said: "Is there an exemption for me?" So the following was revealed: Except those who are disabled.

There are narrations on this topic from Ibn 'Abbas, Jabir and Zaid bin Thabit.

This Hadith is Hasan Sahih and it is a Hadith that is Gharib from the narration of Sulaiman At-Taimi from Abu Ishaq.

And Shu'bah and Ath-Thawri reported this Hadith from Abu Ishaq.

حَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ الْجَهْضَمِيُّ، حَدَّثَنَا الْمُعْتَمِرُ بْنُ سُلَيْمَانَ، عَنْ أَبِيهِ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْبَرَاءِ بْنِ عَازِبٍ، أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " ائْتُونِي بِالْكَتِفِ أَوِ اللَّوْحِ " . فَكَتَبَ : ( لاَ يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ ) وَعَمْرُو بْنُ أُمِّ مَكْتُومٍ خَلْفَ ظَهْرِهِ فَقَالَ هَلْ لِي مِنْ رُخْصَةٍ فَنَزَلَتْ : ( غَيْرُ أُولِي الضَّرَرِ ) . وَفِي الْبَابِ عَنِ ابْنِ عَبَّاسٍ وَجَابِرٍ وَزَيْدِ بْنِ ثَابِتٍ . وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ وَهُوَ حَدِيثٌ غَرِيبٌ مِنْ حَدِيثِ سُلَيْمَانَ التَّيْمِيِّ عَنْ أَبِي إِسْحَاقَ . وَقَدْ رَوَى شُعْبَةُ وَالثَّوْرِيُّ عَنْ أَبِي إِسْحَاقَ هَذَا الْحَدِيثَ .