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) (Using translation from Bukhārī 2832)   

أَنَّ رَسُولَ اللهِ ﷺ أُنْزِلَ عَلَيْهِ {لَا يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ وَالْمُجَاهِدُونَ فِي سَبِيلِ اللهِ} فَجَاءَ ابْنُ أُمِّ مَكْتُومٍ وَهُوَ يُمِلُّهَا عَلَيَّ فَقَالَ يَا رَسُولَ اللهِ لَوْ أَسْتَطِيعُ الْجِهَادَ لَجَاهَدْتُ فَأَنْزَلَ اللهُ وَفَخِذُهُ عَلَى فَخِذِي فَثَقُلَتْ عَلَيَّ حَتَّى ظَنَنْتُ أَنْ سَتُرَضُّ فَخِذِي ثُمَّ سُرِّيَ عَنْهُ {غَيْرُ أُولِي الضَّرَرِ} [النساء 95]  

"Sahl bin Sa'd said: 'I saw Marwan sitting in the Masjid so I went and sat beside him, and he told us that Zaid bin Thabit had told him, that the Messenger of Allah ﷺ dictated to him the words: [Not equal are those of the believers who sit (at home) and those who strive hard and fight in the cause of Allah]. Then Ibn umm Maktum came to him while he was dictating it to me (Zaid) and said: 'O Messenger of Allah! If I were able to go for Jihad I would go out for Jihad.' But he was a blind man. Then Allah revealed to His Messenger ﷺ - while his thigh was agaisnt my thigh, and (it became so heavy that) I thought my thigh would break, then it was lifted from him, and Allah, the Mighty and Sublime, revealed: 'Except those who are disabled (by injury or are blind or lame).'" [1] [1] An-Nisa' 4:95. (Using translation from Nasāʾī 3100)  

رَأَيْتُ مَرْوَانَ جَالِسًا فِي الْمَسْجِدِ فَأَقْبَلْتُ حَتَّى جَلَسْتُ إِلَى جَنْبِهِ فَأَخْبَرَنَا أَنَّ زَيْدَ بْنَ ثَابِتٍ أَخْبَرَهُ أَنَّ رَسُولَ اللهِ ﷺ أَمْلَى عَلَيَّ {لَا يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ وَالْمُجَاهِدُونَ فِي سَبِيلِ اللهِ} قَالَ فَجَاءَهُ ابْنُ أُمِّ مَكْتُومٍ وَهُوَ يُمِلُّهَا عَلَيَّ فَقَالَ يَا رَسُولَ اللهِ وَاللهِ لَوْ أَسْتَطِيعُ الْجِهَادَ لَجَاهَدْتُ وَكَانَ رَجُلًا أَعْمَى فَأَنْزَلَ اللهُ عَلَى رَسُولِهِ ﷺ وَفَخِذُهُ عَلَى فَخِذِي فَثَقُلَتْ حَتَّى هَمَّتْ تُرَضُّ فَخِذِي ثُمَّ سُرِّيَ عَنْهُ فَأَنْزَلَ اللهُ {غَيْرُ أُولِي الضَّرَرِ} [النساء 95]  

"When the following was revealed: 'Not equal are those of the believers who sit (at home),' [1] Ibn Umm Maktum, who was blind, came and said: 'O Messenger of Allah, what about me? I am blind.' He said: 'He did not leave before the following was revealed: Except those who are disabled (by injury or are blind or lame).'" [2] [1] An-Nisa' 4:95. [2] An-Nisa' 4:95. (Using translation from Nasāʾī 3102)  

يَا رَسُولَ اللهِ فَكَيْفَ وَأَنَا أَعْمَى؟ قَالَ فَمَا بَرِحَ حَتَّى نَزَلَتْ {غَيْرُ أُولِي الضَّرَرِ} [النساء 95]  

"bring me a shoulder blade of a camel, or a tablet, and write: Not equal are those of the believers who sit (at home)." [1] 'Amr bin Umm Maktum was behind him and he said: "Is there a concession for me?" Then the following was revealed: "Except those who are disabled (by injury or are blind or lame)." [2] [1] An-Nisa' 4:95. [2] An-Nisa' 4:95. (Using translation from Nasāʾī 3101)  

أَنَّ النَّبِيَّ ﷺ وَذَكَرَ كَلِمَةً مَعْنَاهَا قَالَ ائْتُونِي بِالْكَتِفِ وَاللَّوْحِ فَكَتَبَ {لَا يَسْتَوِي} [النساء 95] الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ وَعَمْرُو بْنُ أُمِّ مَكْتُومٍ خَلْفَهُ فَقَالَ هَلْ لِي مِنْ رُخْصَةٍ؟ فَنَزَلَتْ {غَيْرُ أُولِي الضَّرَرِ} [النساء 95]