Sahih muslim:2874 Chapter: In Paradise There Is A Tree In Whose Shade A Rider Could Travel For One Hundred Years And Still Not Cross It Book 53, Hadith 92

Anas b. Malik reported that Allah’s Messenger (ﷺ) let the dead bodies of the unbelievers who fought in Badr (lie unburied) for three days. He then came to them and sat by their side and called them and said: O Abu Jahl b. Hisham, O Umayya b. Khalaf, O Utba b. Rab’ila, O Shaiba b. Rabi’a, have you not found what your Lord had promised with you to be correct? As for me, I have found the promises of my Lord to be (perfectly) correct. Umar listened to the words of Allah’s Apostle (ﷺ) and said: Allah’s Messenger, how do they listen and respond to you? They are dead and their bodies have decayed. Thereupon he (the Holy Prophet) said: By Him in Whose Hand is my life, what I am saying to them, even you cannot hear more distinctly than they, but they lack the power to reply. Then’he commanded that they should be buried in the well of Badr.