عَنْ أَبِي ذَرٍّ رَضِيَ اللَّهُ عَنْهُ وَقَدْ سَأَلَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ عَنْ أَشْيَاءَ مِنْهَا الصَّدَقَةُ قَالَ: قُلْتُ: يَا رَسُولَ اللَّهِ! فَالصَّدَقَةُ؟ فَقَالَ: ((أَضْعَافٌ مُضَاعَفَةٌ))، قُلْتُ: يَا رَسُولَ اللَّهِ! فَأَيُّهَا أَفْضَلُ؟ قَالَ: ((جُهْدٌ مِنْ مُقِلٍّ أَوْ سِرٌّ إِلَى فَقِيرٍ، … )) الْحَدِيثَ
Narrated from Sayyiduna Abu Dharr (may Allah be pleased with him), he asked the Messenger of Allah (peace and blessings be upon him) several questions, one of which was about charity. He says: I said, "O Messenger of Allah! What do you say about charity?" He (peace and blessings be upon him) said: "Its reward will be multiplied many times." I said, "O Messenger of Allah! Which form of it is the most virtuous?" He (peace and blessings be upon him) said: "Charity from the earnings of a person with little wealth, or giving charity to a poor person in a concealed manner, is superior."