It was narrated that Abu Mas 'ud said:

"When the Messenger of Allah commanded us to give in charity, Abu 'Aqeel 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]

أَخْبَرَنَا بِشْرُ بْنُ خَالِدٍ، قَالَ حَدَّثَنَا غُنْدَرٌ، عَنْ شُعْبَةَ، عَنْ سُلَيْمَانَ، عَنْ أَبِي وَائِلٍ، عَنْ أَبِي مَسْعُودٍ، قَالَ لَمَّا أَمَرَنَا رَسُولُ اللَّهِ ﷺ بِالصَّدَقَةِ فَتَصَدَّقَ أَبُو عَقِيلٍ بِنِصْفِ صَاعٍ وَجَاءَ إِنْسَانٌ بِشَىْءٍ أَكْثَرَ مِنْهُ فَقَالَ الْمُنَافِقُونَ إِنَّ اللَّهَ عَزَّ وَجَلَّ لَغَنِيٌّ عَنْ صَدَقَةِ هَذَا وَمَا فَعَلَ هَذَا الآخَرُ إِلاَّ رِيَاءً فَنَزَلَتِ { الَّذِينَ يَلْمِزُونَ الْمُطَّوِّعِينَ مِنَ الْمُؤْمِنِينَ فِي الصَّدَقَاتِ وَالَّذِينَ لاَ يَجِدُونَ إِلاَّ جُهْدَهُمْ } .