Sayyiduna Thabit bin Dhahak (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he said: "Whoever swears falsely by a religion other than Islam, for example, says, 'If such and such happened, then I am a Jew,' then he will be as he said. And whoever kills himself with a weapon, he will be punished in Hell with that same weapon."

Narrated by Sayyiduna Jundub (may Allah be pleased with him) from the Noble Prophet (peace and blessings of Allah be upon him) that he said: "A man received some wounds, so he killed himself. Allah the Exalted said: 'My servant has hastened before Me (i.e., he took his own life), therefore I have made Paradise forbidden for him.'"

Narrated Abu Huraira (may Allah be pleased with him): The Prophet (peace and blessings of Allah be upon him) said: "Whoever kills himself by throttling shall keep on throttling himself in the Hellfire, and whoever kills himself with a weapon shall keep on injuring himself with it in the Hellfire."

Narrated Anas bin Malik (may Allah be pleased with him): People passed by with a funeral, and the Companions (may Allah be pleased with them) praised the deceased. The Prophet (peace and blessings of Allah be upon him) said: "It has become obligatory." Then another funeral passed by, and they spoke ill of the deceased. The Prophet (peace and blessings of Allah be upon him) said: "It has become obligatory." So Umar bin Khattab (may Allah be pleased with him) asked: "What has become obligatory?" The Prophet (peace and blessings of Allah be upon him) said: "Paradise has become obligatory for the one whom you praised, and Hell has become obligatory for the one whom you spoke ill of. You are Allah's witnesses on earth."

Ameer-ul-Mu'mineen Umar bin Khattab (may Allah be pleased with him) says that the Prophet Muhammad (peace and blessings be upon him) said: "If four people testify to the goodness of a Muslim, Allah will admit him to Paradise." We asked, "And if three people testify to his goodness?" He (peace be upon him) said: "And if three people testify to his goodness, (he will also enter Paradise)." Then we asked, "And if two people testify to his goodness?" He (peace be upon him) said: "And if two people (testify to his goodness, he will also enter Paradise)." Then we did not ask the Prophet (peace be upon him) about the testimony of one person.

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.

Narrated Abu Ayyub (may Allah be pleased with him): One day after sunset, the Prophet (peace and blessings be upon him) came out and heard a (terrifying) sound. He said: "The Jews are being punished in their graves."