Abdullah bin 'Amr bin al-'Aas · The Book of Zakah

"The Messenger of Allah said: 'Give charity.' A man said: 'O Messenger of Allah, I have a Dinar.' He said: 'Spend it on yourself.' He said: 'I have another.' He said: 'Spend it on your wife.' He said: 'I have another.' He said: 'Spend it on your son.' He said: 'I have another.' He said: 'Spend it on your servant.' He said: 'I have another.' He said: 'You know best (what to do with it)."'