(318) بَابُ نَفَقَةِ الرَّجُلِ عَلَى أَهْلِهِ
Jabir said, "A man said, 'Messenger of Allah, I have a dinar.'He said, 'Spend it on yourself.' The man said, 'I have another.' He said,'Spend it on your servant (or he said, 'on your child').' The man said,'I have another.' He said, 'Use it in the Way of Allah, but that is theleast form of sadaqa.'"
Reference: Al-Adab Al-Mufrad 750
In-book reference: Book 32, Hadith 5
English translation: Book 32, Hadith 750