When the Divine Inspiration: "Those of the believers who sit (at home), was revealed the Prophet ﷺ sent for Zaid (bin Thabit) who came with a shoulder-blade and wrote on it. Ibn Um-Maktum complained about his blindness and on that the following revelation came: "Not equal are those believers who sit (at home) except those who are disabled (by injury, or are blind or lame etc.) and those who strive hard and fight in the Way of Allah with their wealth and lives)." (4.95)  

سَمِعْتُ الْبَرَاءَ ؓ يَقُولُ لَمَّا نَزَلَتْ {لاَ يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ} دَعَا رَسُولُ اللَّهِ ﷺ زَيْدًا فَجَاءَ بِكَتِفٍ فَكَتَبَهَا وَشَكَا ابْنُ أُمِّ مَكْتُومٍ ضَرَارَتَهُ فَنَزَلَتْ {لاَ يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ غَيْرُ أُولِي الضَّرَرِ }  

I saw Marwan bin Al-Hakam sitting in the Mosque. So I came forward and sat by his side. He told us that Zaid bin Thabit had told him that Messenger of Allah ﷺ had dictated to him the Divine Verse: "Not equal are those believers who sit (at home) and those who strive hard and fight in the Cause of Allah with their wealth and lives.' (4.95) Zaid said, "Ibn-Maktum came to the Prophet ﷺ while he was dictating to me that very Verse. On that Ibn Um Maktum said, "O Messenger of Allah ﷺ! If I had power, I would surely take part in Jihad." He was a blind man. So Allah sent down revelation to His Apostle while his thigh was on mine and it became so heavy for me that I feared that my thigh would be broken. Then that state of the Prophet ﷺ was over after Allah revealed "...except those who are disabled (by injury or are blind or lame etc.) (4.95)  

أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ ﷺ أَمْلَى عَلَيْهِ لاَ يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ وَالْمُجَاهِدُونَ فِي سَبِيلِ اللَّهِ قَالَ فَجَاءَهُ ابْنُ أُمِّ مَكْتُومٍ وَهُوَ يُمِلُّهَا عَلَىَّ فَقَالَ يَا رَسُولَ اللَّهِ لَوْ أَسْتَطِيعُ الْجِهَادَ لَجَاهَدْتُ وَكَانَ رَجُلاً أَعْمَى فَأَنْزَلَ اللَّهُ تَبَارَكَ وَتَعَالَى عَلَى رَسُولِهِ ﷺ وَفَخِذُهُ عَلَى فَخِذِي فَثَقُلَتْ عَلَىَّ حَتَّى خِفْتُ أَنْ تَرُضَّ فَخِذِي ثُمَّ سُرِّيَ عَنْهُ فَأَنْزَلَ اللَّهُ ﷻ {غَيْرُ أُولِي الضَّرَرِ}