Abu Hurariah said:"Umar said: 'The Messenger of Allah enjoined Sadaqah and it was said that Ibn Jamil, Khalid bin Al-Walid and 'Abbas bin 'Abdul-Muttalib had withheld some. The Messenger of Allah said: What is the matter with Ibn Jamil? Was he not poor then Allah made him rich? As for Khalid bin Al-Walid, you are being unfair to Khalid, for he is saving his shields and weapons for the sake of Allah. As for Al-Abbas bin 'Abdul-Muttalib, the paternal uncle of the Messenger of Allah, it is and obligatory charity for him and he has to pay as much again

English translation · Sunan an-Nasa'i