Volume 2, Book 24, Number 496:
Narrated Abu Masud:
When the verses of charity were revealed, we used to work as porters. A man came and distrib –
uted objects of charity in abundance. And they (the people) said, “He is showing off.” And another
man came and gave a sa (a small measure of food grains); they said, “Allah is not in need of this small
amount of charity.” And then the Divine Inspiration came: “Those who criticize such of the believers
who give in charity voluntarily and those who could not find to give in charity except what is avail –
able to them.” (9.79).