Sunan Abi Dawud — Trials and Fierce Battles (Kitab Al-Fitan Wa Al-Malahim) — Hadith No: 4255

Narrated Jabir ibn Abdullah Al-Ansari: While we were sitting with the Messenger of Allah (ﷺ) a man brought him some gold equal in weight to an egg, and said: Messenger of Allah, I have got this from a mine; take it; it is sadaqah. I have no more than this. The Messenger of Allah (ﷺ) turned his attention from him. Then he came to him from his right side and repeated the same words. But he (the Prophet) turned his attention from him. He then came to him from his left side and repeated the same words. But he (again) turned his attention from him. He then came to him from behind. The Messenger of Allah (ﷺ) took it and threw it away. Had it hit him, it would have hurt him or wounded him. The Messenger of Allah (ﷺ) said: One of you brings all that he possesses and says: This is sadaqah. Then he sits down and spreads his hand before the people. The best sadaqah is that which leaves a competence

The above mentioned tradition has also been narrated by `Abd al-Rahman bin ‘Awf from the Messenger of Allah (SWAS) through a different chain of narrators to the same effect

Narrated Umar ibn al-Khattab: The Messenger of Allah (ﷺ) commanded us one day to give sadaqah. At that time I had some property. I said: Today I shall surpass AbuBakr if I surpass him any day. I, therefore, brought half my property. The Messenger of Allah (ﷺ) asked: What did you leave for your family? I replied: The same amount. AbuBakr brought all that he had with him. The Messenger of Allah (ﷺ) asked him: What did you leave for your family? He replied: I left Allah and His Apostle for them. I said: I shall never compete you in anything

The aforesaid tradition has also been transmitted by Shu’bah through a different chain of narrators to the same effect. The version goes :He said : Make it known for a year. He said this three times. He said: I do not know whether he said “for a year” or “for three years”