[Machine] I was with the Messenger of Allah, ﷺ , when the verse "Not equal are those believers remaining [at home] - other than the disabled - and the mujahideen [striving and fighting] in the cause of Allah" [Quran 4:95] was revealed. Ibn Umm Maktum came to him while I was writing it and said, "O Messenger of Allah, I have been afflicted by harm and if I were able to fight, I would have fought." Zaid bin Thabit said, "So the Messenger of Allah, ﷺ , placed one of his legs on my thigh, making it heavy, until I thought it would break, then he said to me, 'Write: "Not equal are those believers remaining [at home] - other than the disabled - and the mujahideen."' This is the wording of the Qantari Hadith."
كُنْتُ عِنْدَ رَسُولِ اللهِ ﷺ فَنَزَلَتْ لَا يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ وَالْمُجَاهِدُونَ فِي سَبِيلِ اللهِ قَالَ فَجَاءَ ابْنُ أُمِّ مَكْتُومٍ وَأَنَا أَكْتُبُهَا فَقَالَ يَا رَسُولَ اللهِ قَدْ تَرَى مَا بِعَيْنِيَّ مِنَ الضَّرَرِ وَلَوْ أَسْتَطِيعُ الْجِهَادَ لَجَاهَدْتُ قَالَ زَيْدُ بْنُ ثَابِتٍ فَثَقُلَتْ فَخِذُ رَسُولِ اللهِ ﷺ عَلَى فَخِذِي حَتَّى هَمَّتْ أَنْ تَرُضَّهَا ثُمَّ سُرِّيَ عَنْهُ فَقَالَ لِي اكْتُبْ {لَا يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ غَيْرُ أُولِي الضَّرَرِ وَالْمُجَاهِدُونَ} [النساء 95] لَفْظُ حَدِيثِ الْقَنْطَرِيِّ