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]