الَّذينَ يَلمِزونَ المُطَّوِّعينَ مِنَ المُؤمِنينَ فِي الصَّدَقاتِ وَالَّذينَ لا يَجِدونَ إِلّا جُهدَهُم فَيَسخَرونَ مِنهُم ۙ سَخِرَ اللَّهُ مِنهُم وَلَهُم عَذابٌ أَليمٌ

Those who criticize the contributors among the believers concerning [their] charities and [criticize] the ones who find nothing [to spend] except their effort, so they ridicule them - Allah will ridicule them, and they will have a painful punishment.