Bismillah ar-rahman ar-rahim
Anas bin Malik رضي الله عنه narrated : The Messenger of Allah صلى الله عليه وسلم left for three days the bodies of pagans who were killed in Badr, then went to them and stood calling : "O Abu Jahl bin Hisham, O Umaiyah bin Khalaf, O 'Uthbah bin Rabi'ah! Have you found what your Rubb promised you right? I have found what my Rubb promised me right."
'Umar رضي الله عنه upon hearing what the Prophet صلى الله عليه وسلم said asked : "O Messenger of Allah! How do they hear you? And how do they answer while they have become rotten?"
The Messenger of Allah said : "By Whom in Whose Hand is my life, you do not hear what I say better than them, but they can not answer."
Then the Messenger صلى الله عليه وسلم ordered the Companions to pull the dead bodies of the pagans and throw them in a well at Badr. (Muslim : 2874)