(115) بَابُ إِنَّ كُلَّ مَعْرُوفٍ صَدَقَةٌ
Abu Dharr reported that it was said, "Messenger of Allah, the wealthypeople have taken all the rewards. They pray as we pray. They fast as wefast, but they give sadaqa from their excess wealth." He said, "Has Allahnot given you something to give as sadaqa? Every time you praise or glorifyAllah, that is sadaqa. There is sadaqa is sexual intercourse." He was asked,"Is there sadaqa in satisfying one's appetite?" He replied, "If he doesit in a haram manner, is that not a wrong action? Similarly if he doesit in a halal manner, he receives a reward."
Reference: Al-Adab Al-Mufrad 227
In-book reference: Book 11, Hadith 7
English translation: Book 11, Hadith 227