It was narrated that Ibn Shihab said: “Sahl bin Saad 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 صلی اللہ علیہ وآلہ وسلم dictated to him the words: [ 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: ‘Messenger of Allah صلی اللہ علیہ وآلہ وسلم! 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 صلی اللہ علیہ وآلہ وسلم — while his thigh was against 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).” (Sahih)