Volume 6, Book 60, Number 190:
Narrated Abu Musud:
When we were ordered to give alms, we began to work as porters (to earn something we could
give in charity). Abu Uqail came with one half of a Sa (special measure for food grains) and another
person brought more than he did. So the hypocrites said, “Allah is not in need of the alms of this (i.e.
‘Uqail); and this other person did not give alms but for showing off.” Then Allah revealed:–
‘Those who criticize such of the Believers who give charity voluntarily and those who could not
find to give in charity except what is available to them.’ (9.79)