Ṣaḥīḥ Muslim

Hudhayfah (may Allah be pleased with him) reported: We were with ‘Umar (may Allah be pleased with him) and he said: Who among you heard the Messenger of Allah (may Allah's peace and blessings be upon him) mention the trials? Some people said: We heard him. He said: Perhaps you mean the trial of a man in his family and his neighbor? They said: Yes. He said: That is expiated by prayer, fasting, and charity.

But who among you heard the Prophet (may Allah's peace and blessings be upon him) mention the trial that surges like the waves of the sea? Hudhayfah said: The people remained silent, and I said: I did. He said: May your father be sacrificed for you! Hudhayfah said: I heard the Messenger of Allah (may Allah's peace and blessings be upon him) say: "The trials are presented to the hearts, like a reed mat, stick by stick.

Any heart that absorbs them, a black spot will be marked in it, and any heart that rejects them, a white spot will be marked in it, until the hearts become two: one white, like a smooth rock, untouched by any trial as long as the heavens and the earth remain, and the other black and discolored, like a jug, turned upside down, not acknowledging what is good nor rejecting what is evil, except for what it has absorbed of its desires." Hudhayfah said: I informed him that between you and them is a closed door, which is about to be broken.

‘Umar said: Will it be a break, may you have no father? If it were opened, perhaps it would have been restored. I said: No, it will be broken. I informed him that this door is a man who will either be killed or die, a speech that is not full of falsehoods. Abu Khālid said: I said to Sa‘d: O Abu Mālik, what is "black and discolored"? He said: It is extreme whiteness mixed with blackness. He said: I said: What is "a jug turned upside down"? He said: Turned over.