Sunan At-Tirmidhi

Narrated Al-Bara bin 'Azib:""When the following was revealed: 'Not equal are those of the believers who sit (4:95)' 'Amr bin Umm Maktum came to the Prophet (ﷺ)."" He said: ""He was blind, so he said: 'O Messenger of Allah! What do you order me with? Indeed my vision is disabled.' So Allah [Most High] revealed this Ayah: 'Except those who are disabled.' So the Prophet (ﷺ) said: 'Bring me a shoulder bone and inkwell' - or 'Bring me a tablet and an inkwell