(Those of the believers who sit still, other than those who have a (disabling) hurt, are not on an equality with those who strive in the way of Allah…) [4:95]. Abu ‘Uthman Sa‘id ibn Muhammad al-‘Adl informed us> his grandfather> Muhammad ibn Ishaq al-Sarraj> Muhammad ibn Humayd al-Razi> Salamah ibn al-Fadl> Muhammad ibn Ishaq> al-Zuhri> Sahl ibn Sa‘d> Marwan ibn al-Hakam> Zayd ibn Thabit who said: “I was with the Prophet, Allah bless him and give him peace, when the verse (Those of the believers who sit still are not on an equality with those who strive in the way of Allah) and did not mention (other than those who have a (disabling) hurt). Ibn Umm Maktum said: ‘How is this so when I am blind and unable to see?’ The Prophet, Allah bless him and give him peace, was overwhelmed with revelation in this assembly and he leaned on my thigh. By Him in whose Hand is my soul, his weight grew so much on my thigh that I feared he would crush it. Then he was relieved, upon which he said: ‘Write: (Those of the believers who sit still, other than those who have a (disabling) hurt, are not on an equality with those who strive in the way of Allah)’, and I wrote it down”. This was narrated by Bukhari> Isma‘il ibn ‘Abd Allah> Ibrahim ibn Sa‘d> Salih> al-Zuhri. Muhammad ibn Ibrahim ibn Muhammad ibn Yahya informed us> Muhammad ibn Ja‘far ibn Matar> Abu Khalifah> Abu’l-Walid> Shu‘bah> Abu Ishaq> al-Bara’ who said: “When the verse (Those of the believers who sit still are not on an equality…), the Messenger of Allah, Allah bless him and give him peace, called Zayd who went to him with a shoulder blade and wrote on it this verse. But Ibn Umm Maktum complained about the fact that he is blind, and so the verse (Those of the believers who sit still, other than those who have a (disabling) hurt, are not on an equality with those who strive in the way of Allah) was revealed”. This was narrated by Bukhari from Abu’l-Walid and by Muslim from Bundar from Ghundar, and both Abu’l-Walid and Ghundar related it from Shu‘bah. Isma'il ibn Abi al-Qasim al-Nasrabadhi informed us> Isma'il ibn Najid> Muhammad ibn 'Abdus> 'Ali ibn al-Ja'd> Zuhayr> Abu Ishaq> al-Bara' that the Messenger of Allah, Allah bless him and give him peace, said: “Call Zayd for me and ask him to bring with him a shoulder blade and an inkwell”, or he said: “a slate”.
Asbab Al-Nuzul by Al-Wahidi , trans. Mokrane Guezzou
