Narrated Ibn 'Umar:

"The Messenger of Allah spoke to the People (buried) in the Well saying: "Have you found out that what your Lord had promised you is true?" then someone exclaimed: "Are you calling out to the dead!" The Prophet replied: "You do not hear better than they do, except they do not respond."
Sahih Bukhari, Volume 2, Book 23, Number 452

Narrated Abu Talha:

"On the day of Badr, the Prophet ordered that the corpses of twenty four leaders of Quraish should be thrown into one of the dirty dry wells of Badr. �� When he halted at the edge of the well, he addressed the corpses of the Quraish infidels by their names and their fathers' names, "O so-and-so, son of so-and-so and O so-and-so, son of so-and-so! Would it have pleased you if you had obeyed Allah and His Apostle? We have found true what our Lord promised us. Have you too found true what your Lord promised you? "'Umar said, "O Allah's Apostle! You are speaking to bodies that have no souls!" Allah's Apostle said, "By Him in Whose Hand Muhammad's soul is, you do not hear, what I say better than they do." (Qatada said, "Allah brought them to life (again) to let them hear him, to reprimand them and slight them and take revenge over them and caused them to feel remorseful and regretful.")
Sahih Bukhari, Volume 5, Book 59, Number 314

And Anas b. Malik reported that:

Allah's Messenger (may peace be upon him) 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 (may peace be upon him) 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.
Sahih Muslim, Book 040, Number 6869

Narrated Ibn Shihab:

These were the battles of Allah's Apostle (which he fought), and while mentioning (the Badr battle) he said, "While the corpses of the pagans were being thrown into the well, Allah's Apostle said (to them), 'Have you found what your Lord promised true?" 'Abdullah said, "Some of the Prophet's companions said, "O Allah's Apostle! You are addressing dead people.' Allah's Apostle replied, 'You do not hear what I am saying, better than they.' ��"
Sahih Bukhari, Volume 5, Book 59, Number 360