Sunan Abi Dawud

Al-Hasan reported that Umar asked:Which of your knows what share the Messenger of Allah (ﷺ) had given to the grandfather from the estate? Ma'qil ibn Yasar said: The Messenger of Allah (ﷺ) gave him a sixth. He asked: Along with whom? He replied: I do not know. He said: You do not know; what is the use then?