سورة الحج

The Prophet (peace be upon him and his family): Abdullah ibn Salam asked the Prophet (peace be upon him and his family): ... "O Muhammad (peace be upon him and his family)! Tell me, to what do you invite?" He said: "To Islam and faith in Allah." He asked: "What is Islam?" He said: "To bear witness that there is no god but Allah alone, who has no partner, and that Muhammad (peace be upon him and his family) is His servant and Messenger, and [to bear witness] that the Hour is coming, there is no doubt in it, and that Allah will raise up all those who are in the graves." Abdullah ibn Salam said: "O Muhammad (peace be upon him and his family)! You have spoken a true and right word."

Imam Sadiq (peace be upon him): It is narrated from Imam Sadiq (peace be upon him): [One day] the Messenger of Allah (peace be upon him and his family) said to Jibril (peace be upon him): "O Jibril! Show me how Allah the Exalted will bring the dead to life on the Day of Resurrection." Jibril (peace be upon him) said: "I will do so." Then [together with the Prophet (peace be upon him and his family)] he went to the graveyard of Banu Sa'idah and stood over a grave and addressed it, saying: "Come out by the permission of Allah!" At that moment a man came out of the grave, shaking the dust off his head, and his cry of woe was raised loud. Then Jibril (peace be upon him) ordered him to return [to his grave] and he did so. Then Jibril (peace be upon him) went over another grave and addressed it, saying: "Come out by the permission of Allah!" At that moment a young man came out of the grave, shaking the dust off his head, and saying: "I bear witness that there is no god but Allah alone, who has no partner, and I bear witness that Muhammad (peace be upon him and his family) is His servant and Messenger, and I bear witness that أَنَّ السَّاعَةَ آتِیَةٌ لا رَیْبَ فِیها وَ أَنَّ اللهَ یَبْعَثُ مَنْ فِی الْقُبُورِ [the Hour is coming, there is no doubt in it, and Allah will raise up those who are in the graves]." At that moment Jibril (peace be upon him) said: "O Muhammad (peace be upon him and his family)! In this way will the dead be brought to life on the Day of Resurrection."

Imam Sadiq (peace be upon him): When Allah wills to bring people to life, the sky rains upon the earth for forty days and nights, and as a result of that the parts of the bodies come together and the flesh grows [upon them].