From Sahih Muslim (Hadith 4912):
It has been narrated on the authority of Bara' who said:When the Qur'anic verse:" Those who sit (at home) from among mu'min" (iv. 94) was revealed, the son of Umm Maktum spoke to him (the Holy Prophet). (At this). the words:" other than those who have a trouble (illness)" were revealed
Reference: Muslim 4912