It is narrated from Sayyiduna Abu Amir (may Allah be pleased with him) that once the Prophet (peace and blessings of Allah be upon him) was sitting in a gathering with his companions when Jibreel (peace be upon him) came in a changed form. The Prophet (peace be upon him) thought that he was a Muslim man. He greeted with salam, and the Prophet (peace be upon him) replied. Then he placed his hands on the knees of the Prophet (peace be upon him) and asked: O Messenger of Allah! What is meant by Islam? The Prophet (peace be upon him) said: "Submit yourself before Allah, testify that there is no god but Allah and that Muhammad (peace be upon him) is His servant and Messenger, establish prayer, and give zakat." He asked: If I do these things, will I be called a Muslim? The Prophet (peace be upon him) said: Yes! Then he asked: What is meant by Iman (faith)? The Prophet (peace be upon him) said: To have faith in Allah, the Last Day, the angels, the books, the prophets, death and life and what comes after death, Paradise and Hell, the reckoning and the balance, and to believe that all good and bad destiny is from Allah. He asked: If I do these things, will I become a believer? The Prophet (peace be upon him) said: Yes! Then he asked: O Messenger of Allah! What is meant by Ihsan (excellence)? The Prophet (peace be upon him) said: "To worship Allah as if you see Him, and if you cannot achieve this state, then know that He sees you." He asked: If I do this, have I attained the rank of Ihsan? The Prophet (peace be upon him) said: "Yes." The narrator says that we were hearing the answers of the Prophet (peace be upon him), but we could not see the person with whom the Prophet (peace be upon him) was conversing, nor could we hear his voice. Then the questioner asked: O Messenger of Allah! When will the Hour (Day of Judgment) come? The Prophet (peace be upon him) said: "Subhan Allah! There are five things of the unseen which none knows except Allah." (Then he recited this verse:) "Indeed, the knowledge of the Hour is with Allah alone, He sends down the rain," He alone knows what is in the wombs. No soul knows what it will earn tomorrow, and no soul knows in which land it will die. Surely Allah is All-Knowing, All-Aware." Then the questioner said: O Messenger of Allah! If you wish, I can tell you two signs which will occur before the Hour? The Prophet (peace be upon him) said: "Tell me." He said: When you see that a slave woman gives birth to her mistress, and those who build buildings are boasting over one another in buildings, and naked people have become the leaders of the people (then the Hour is near). The narrator asked: O Messenger of Allah! Who will these people be? He said: "The Bedouins." Then the questioner left, and afterwards we did not see his way. Then the Prophet (peace be upon him) said "Subhan Allah" three times and said: "That was Jibreel who came to teach people their religion. By Him in Whose hand is the soul of Muhammad (peace be upon him), whenever Jibreel came to me (except this time), I recognized him (but this time I did not recognize him)."