Two angels Munkir and Nakeer enquire from the dead in his Grave

Mas’alah 1: When a person is dead, then after his burial and if not buried then in whatever condition and manner the dead body has been disposed off, two angels come to him. One of them is called Munkir and the other Nakeer. They enquire from the dead as to who is his Creator (Allah), what was his religion and who is Prophet Muhammad Sallallaahu alayhi wasallam.
If the deceased has been a faithful believer, his replies are correct and proper then he gets peace and amenities of all kinds. They open a window in his grave towards the Heaven and the cool, sweet and fragrant air of the Heaven enters his grave and the dead sleeps peacefully.
But if the dead was not a faithful believer or had no Faith (Imaan), in reply to all the questions of the angels he says that he knows nothing. Then such a person is subjected to great hardships and punishment till the Day of Judgement.
Some are exempted from this test by Allah, but only the dead knows about it. We are not aware of it in the same way as a Sleeping man Sees a dream but the man sitting by his side remains unaware about it.

Mas’alah 2: After death every person is shown his permanent abode in the world-hereafter every morning and evening. Blessed person is given the tidings by showing him his abode in Heaven and the one condemned to Hell is made more despondent by showing him his abode in Hell.

Mas’alah 3: Any prayer or act of charity done for the dead increases his credit and is very beneficial for him.
signs of the Last Day as fore-told