[Machine] When the verse "Not equal are those believers remaining [at home] - other than the disabled - and the mujahideen, [who strive and fight] in the cause of Allah" was revealed, the Prophet Muhammad ﷺ assigned Zaid to write it down. Then Ibn Umm Maktum came and complained about his disability to the Messenger of Allah ﷺ . So Allah revealed the verse "Not equal are those believers remaining [at home] - other than the disabled" [Quran 4:95].
لَمَّا نَزَلَتْ لَا يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ وَالْمُجَاهِدُونَ فِي سَبِيلِ اللهِ الْآيَةَ أَمَرَ رَسُولُ اللهِ ﷺ زَيْدًا فَكَتَبَهَا فَجَاءَ ابْنُ أُمِّ مَكْتُومٍ فَشَكَا ضَرَارَتَهُ إِلَى رَسُولِ اللهِ ﷺ فَأَنْزَلَ اللهُ ﷻ {غَيْرُ أُولِي الضَّرَرِ} [النساء 95]