It was narrated that Abu Mas’ud said: “When the Messenger of Allah صلی اللہ علیہ وآلہ وسلم commanded us to give in charity, Abii ‘AqIl gave half a a’, and another man brought much more than that. The hypocrites said: ‘Allah has no need of the charity of the former, and the latter only did it to show off.’ Then the following was revealed:
‘Those who defame such of the believers who give charity voluntarily, and such who could not find to give charity except what is available to them.” (Sahih)