Abdullah bin 'Umar said:"Umar bin Al-Khattab told me: 'While we were with the Messenger of Allah [SAW] one day, a man appeared before us whose clothes were exceedingly white and whose hair was exceedingly black. We could see no signs of travel on him, but none of us knew him. He came and sat before the Messenger of Allah [SAW], putting his knees against his, and placing his hands on his thighs, then he said: "O Muhammad, tell me about Islam." He said: "It is to bear witness that there is none worthy of worship except Allah [SWT] and that Muhammad [SAW] is the Messenger of Allah, to establish the Salah, to give Zakah, to fast Ramadan, and to perform Hajj to the House if you are able to bear the journey." He said: "You have spoken the truth." And we were amazed by his asking him, and then saying, "You have spoken the truth". Then he said: "Tell me about Faith." He said: "It is to believe in Allah [SWT] , His Angels, His Books, His Messengers, the Last Day, and in the Divine Decree, its good and its bad." He said: "You have spoken the truth." He said: "Tell me about Al-Ihsan." He said: "It is to worship Allah [SWT] as if you can see Him, for although you cannot see Him, He can see you." He said: "Tell me about the Hour." He said: "The one who is asked about it does not know more about it than the one who is asking." He said: "Then tell me about its signs." He said: "When a slave woman gives birth to her mistress, when you see the barefoot, naked, destitute shepherds competing in making tall buildings.'" 'Umar said: 'Three (days) passed, then the Messenger of Allah [SAW] said to me: "O 'Umar, do you know who the questioner was?" I said: "Allah and His Messenger know best." He said: "That was Jibril, peace be upon him, who came to you to teach you your religion
نSunan an-Nasa'iHadith 4991SahihNarrated by It wasسنن النسائيرقم ٤٩٩١
It was narrated that Abu Hurairah and Abu Dharr said:"The Messenger of Allah [SAW] would sit among his Companions and if a stranger came, he would not know which of them was he (the Prophet [SAW]) until he asked. So we suggested to the Messenger of Allah [SAW] that we should make a dais for him so that any stranger would know him if he came to him. So we built for him a bench made of clay on which he used to sit. (One day) we were sitting and the Messenger of Allah [SAW] was sitting in his spot, when a man came along who was the most handsome and good-smelling of all people, and it was as if no dirt had ever touched his garments. He came near the edge of the rug and greeted him, saying: 'Peace be upon you, O Muhammad!' He returned the greeting, and he said: 'Shall I come closer, O Muhammad?' He came a little closer, and he kept telling him to come closer, until he put his hands on the knees of the Messenger of Allah [SAW]. He said: 'O Muhammad, tell me, what is Islam?' He said: 'Islam means to worship Allah and not associate anything with Him; to establish Salah, to pay Zakah, to perform Hajj to the House, and to fast Ramadan.' He said: 'If I do that, will I have submitted (be a Muslim)?' He said: 'Yes.' He said: 'You have spoken the truth,' we found it odd. He said: 'O Muhammad, tell me, what is faith?' He said: 'To believe in Allah [SWT], His Angels, the Book, the Prophets, and to believe in the Divine Decree.' He said: 'If I do that, will I have believed?' The Messenger of Allah [SAW] said: 'Yes.' He said: 'You have spoken the truth.' He said: 'O Muhammad, tell me, what is Al-Ihsan?' He said: 'To worship Allah [SWT] as if you can see Him, for although you cannot see Him, He can see you.' He said: 'You have spoken the truth.' He said: 'O Muhammad, tell me about the Hour.' He lowered his head and did not answer. Then he repeated the question, and he did not answer. Then he repeated the question (a third time) and he did not answer. Then he raised his head and said: 'The one who is being asked does not know more than the one who is asking. But it has signs, by which it may be known. When you see the herdsmen competing in building tall buildings, when you see the barefoot and naked ruling the Earth, when you see a woman giving birth to her mistress. Five things which no one knows except Allah [SWT]. Verily, Allah, with Him (alone) is the knowledge of the Hour up to His saying: 'Verily, Allah is All-Knower, All-Aware (of things).' Then he said: 'No, by the One who sent Muhammad with the truth, with guidance and glad tidings, I did not know him more than any man among you. That was Jibril, peace be upon you, who came down in the form of Dihyah Al-Kalbi
Grades by collection
Sahih al-Bukhari451
Sahih Muslim464
Sunan Abi Dawud151
Jami' at-Tirmidhi338
Sunan an-Nasa'i50
Sunan Ibn Majah437
Muwatta Malik8
al-Mustadrak (al-Hakim)627
Musnad Ahmad716
Sunan ad-Darimi21
Kitab al-Fitan (Nu'aym ibn Hammad)1,988
SahihHasanDa'if (weak)Ungraded
Bukhari and Muslim are sahih by inclusion. For the others the bar follows al-Albani's verdict where he graded, then Zubair Ali Zai. Every verdict is on each card.