وَالدَّلِيلُ عَلَى أَنْ لَا وَقْتَ فِيمَا يُعْطَى الْفَقِيرُ مِنَ الصَّدَقَةِ إِلَّا قَدْرً سُدُّ خُلَّتَهُ وَفَاقَتَهُ
And the explanation of the evidence that there is no fixed amount for charity given to a poor person, but he should be given as much as will remove his poverty.