Mukhtasar Bukhari

Narrated by Sayyiduna Bara’ bin Azib from the Noble Prophet (peace and blessings be upon him) that he (peace and blessings be upon him) said: “When a believer is made to sit up in his grave and his angels come to him, then he bears witness that there is no deity except Allah and that Muhammad (peace and blessings be upon him) is the Messenger of Allah. Thus, what Allah the Exalted has said (in Surah Ibrahim, verse 27): ‘Allah keeps firm those who believe, with the firm word, in the life of this world and in the Hereafter,’ this is what it means.”

Narrated Ibn Umar (may Allah be pleased with them) that the Messenger of Allah (peace and blessings of Allah be upon him) looked into the well where the slain polytheists of Badr were lying dead and said: "Have you found true what your Lord promised you?" It was said to him: "Are you calling out to the dead?" So he (peace and blessings of Allah be upon him) said: "You do not hear better than they do, but they cannot respond."

Umm al-Mu’minin Aisha (may Allah be pleased with her) said: (regarding the slain of Badr) The Prophet (peace and blessings of Allah be upon him) only said this: “They now know that what I used to tell them was true.” And indeed Allah the Exalted has said: “O Prophet! You cannot make the dead hear.” (Surah An-Naml: 80).

Lady Asma bint Abi Bakr Siddiq (may Allah be pleased with her) says that (on one occasion) the Messenger of Allah (peace and blessings be upon him) delivered a sermon, and he mentioned the trial of the grave by which a person will be tested. Upon hearing this, the Muslims cried out loudly and wept.