It is narrated on the authority of Hudhaifa (RA): We were sitting in the company of Umar and he said: Who amongst you has heard the Messenger of Allah ( صلی اللہ علیہ وسلم ) talking about the turmoil? Some people said: It is we who heard it. Upon this be remarked: Perhaps by turmoil you presume the unrest of man in regard to his household or neighbour, they replied: Yes. He ('Umar) observed: Such (an unrest) would be done away with by prayer, fasting and charity. But who amongst you has heard from the Apostle ( صلی اللہ علیہ وسلم ) describing that turmoil which would come like the wave of the ocean. Hudhaifa said: The people hushed into silence, I replied: It is I. He ('Umar) said: Ye, well, your father was also very pious. Hudhaifa said: I heard the Messenger of Allah ( صلی اللہ علیہ وسلم ) (may peace be, upon him) observing: Temptations will be presented to men's hearts as reed mat is woven stick by stick and any heart which is impregnated by them will have a black mark put into it, but any heart which rejects them will have a white mark put in it. The result is that there will become two types of hearts: one white like a white stone which will not be harmed by any turmoil or temptation, so long as the heavens and the earth endure; and the other black and dust-coloured like a vessel which is upset, not recognizing what is good or rejecting what is abominable, but being impregnated with passion. Hudhaifa said: I narrated to him ('Umar): There is between you and that (turmoil) a closed door, but there is every likelihood of its being broken. 'Umar said: Would it be broken? You have, been rendered fatherless. Had it been opened, it would have been perhaps closed also. I said: No, it would be broken, and I narrated to him: Verily that door implies a person who would be killed or die. There is no mistake in this hadith. Abu Khalid narrated: I said to Sa'd, O Abu Malik, what do you mean by the term" Aswad Murbadda"? He replied: High degree of whiteness in blackness. I said: What is meant by" Alkoozu Mujakhiyyan"? He replied: A vessel turned upside down.