Abu Hurairah reported,

The Messenger of Allah ﷺ said, "Ask me." But they were in awe of him and hesitated to ask. Then a man came and sat down by his knees and said, "Messenger of Allah, what is Islam?"He replied, "That you associate nothing with Allah, establish the prayer, give the zakat, and fast in Ramadan."The man said, "You have spoken truly."Then he asked, "Messenger of Allah, what is faith?"He replied, "That you believe in Allah, His angels, His Book, the meeting with Him, His messengers, that you believe in the resurrection, and that you believe in the divine decree, all of it."The man said, "You have spoken truly."Then he asked, "Messenger of Allah, what is excellence?"He replied, "That you fear Allah as if you see Him, for though you do not see Him, He sees you."The man said, "You have spoken truly."Then he asked, "Messenger of Allah, when will the Hour come?"He replied, "The one questioned about it knows no more than the one asking. But I will tell you of its signs. When you see a woman giving birth to her master, that is one of its signs. When you see the barefoot, the naked, the deaf, and the dumb as the kings of the earth, that is one of its signs. When you see the herders of sheep competing in tall buildings, that is one of its signs. It is among five things of the unseen that none knows but Allah."Then he recited, "Indeed, Allah has knowledge of the Hour and sends down the rain and knows what is in the wombs. And no soul perceives what it will earn tomorrow, and no soul perceives in what land it will die. Indeed, Allah is Knowing and Aware" [Luqman 31:34].Then the man stood up and left. The Messenger of Allah ﷺ said, "Bring him back to me." They searched for him but could not find him.The Messenger of Allah ﷺ said, "That was Jibreel. He wanted you to learn, since you did not ask."

Muslim 99

Sahih

حدثني زهير بن حرب حدثنا جرير عن عمارة وهو ابن القعقاع عن أبي زرعة

عن أبي هريرة قال

قال رسول الله ﷺ سلوني فهابوه أن يسألوه فجاء رجل فجلس عند ركبتيه فقال يا رسول الله ما الإسلام قال لا تشرك بالله شيئا وتقيم الصلاة وتؤتي الزكاة وتصوم رمضان قال صدقت قال يا رسول الله ما الإيمان قال أن تؤمن بالله وملائكته وكتابه ولقائه ورسله وتؤمن بالبعث وتؤمن بالقدر كله قال صدقت قال يا رسول الله ما الإحسان قال أن تخشى الله كأنك تراه فإنك إن لا تكن تراه فإنه يراك قال صدقت قال يا رسول الله متى تقوم الساعة قال ما المسئول عنها بأعلم من السائل وسأحدثك عن أشراطها إذا رأيت المرأة تلد ربها فذاك من أشراطها وإذا رأيت الحفاة العراة الصم البكم ملوك الأرض فذاك من أشراطها وإذا رأيت رعاء البهم يتطاولون في البنيان فذاك من أشراطها في خمس من الغيب لا يعلمهن إلا الله ثم قرأ {إن الله عنده علم الساعة وينزل الغيث ويعلم ما في الأرحام وما تدري نفس ماذا تكسب غدا وما تدري نفس بأي أرض تموت إن الله عليم خبير} قال ثم قام الرجل فقال رسول الله ﷺ ردوه علي فالتمس فلم يجدوه فقال رسول الله ﷺ هذا جبريل أراد أن تعلموا إذ لم تسألوا

مسلم 99صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Faith
Chapter
Islam, what it is and explanation of its qualities
Numbering
Darussalam 99
Muslim 99