(115) بَابُ إِنَّ كُلَّ مَعْرُوفٍ صَدَقَةٌ
Jabir ibn 'Abdullah reported that the Messenger of Allah, may Allahbless him and grant him peace, said, "Every correct action is sadaqa."
Reference: Al-Adab Al-Mufrad 224
In-book reference: Book 11, Hadith 4
English translation: Book 11, Hadith 224