"When the Messenger of Allah commanded us to give in charity, Abu 'Aqil give half a Sa', 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."'[1] (Using translation from Nasāʾī 2530)
لَمَّا أَمَرَنَا رَسُولُ اللهِ ﷺ بِالصَّدَقَةِ فَتَصَدَّقَ أَبُو عَقِيلٍ بِنِصْفِ صَاعٍ وَجَاءَ إِنْسَانٌ بِشَيْءٍ أَكْثَرَ مِنْهُ فَقَالَ الْمُنَافِقُونَ إِنَّ اللهَ لَغَنِيٌّ عَنْ صَدَقَةِ هَذَا وَمَا فَعَلَ هَذَا الْآخَرُ إِلَّا رِيَاءً فَنَزَلَتْ {الَّذِينَ يَلْمِزُونَ الْمُطَّوِّعِينَ مِنَ الْمُؤْمِنِينَ فِي الصَّدَقَاتِ وَالَّذِينَ لَا يَجِدُونَ إِلَّا جُهْدَهُمْ} [التوبة 79]