Sahih Muslim Book - 1, Hadith - 99

حَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ حَدَّثَنَا جَرِيرٌ عَنْ عُمَارَةَ وَهُوَ ابْنُ الْقَعْقَاعِ عَنْ أَبِي زُرْعَةَ عَنْ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ سَلُونِي فَهَابُوهُ أَنْ يَسْأَلُوهُ فَجَاءَ رَجُلٌ فَجَلَسَ عِنْدَ رُكْبَتَيْهِ فَقَالَ يَا رَسُولَ اللَّهِ مَا الْإِسْلَامُ؟ قَالَ لَا تُشْرِكُ بِاللَّهِ شَيْئًا وَتُقِيمُ الصَّلَاةَ وَتُؤْتِي الزَّكَاةَ وَتَصُومُ رَمَضَانَ قَالَ صَدَقْتَ قَالَ يَا رَسُولَ اللَّهِ مَا الْإِيمَانُ قَالَ أَنْ تُؤْمِنَ بِاللَّهِ وَمَلَائِكَتِهِ وَكِتَابِهِ وَلِقَائِهِ وَرُسُلِهِ وَتُؤْمِنَ بِالْبَعْثِ وَتُؤْمِنَ بِالْقَدَرِ كُلِّهِ قَالَ صَدَقْتَ قَالَ يَا رَسُولَ اللَّهِ مَا الْإِحْسَانُ قَالَ أَنْ تَخْشَى اللَّهَ كَأَنَّكَ تَرَاهُ فَإِنَّكَ إِنْ لَا تَكُنْ تَرَاهُ فَإِنَّهُ يَرَاكَ قَالَ صَدَقْتَ قَالَ يَا رَسُولَ اللَّهِ مَتَى تَقُومُ السَّاعَةُ؟ قَالَ مَا الْمَسْئُولُ عَنْهَا بِأَعْلَمَ مِنْ السَّائِلِ وَسَأُحَدِّثُكَ عَنْ أَشْرَاطِهَا إِذَا رَأَيْتَ الْمَرْأَةَ تَلِدُ رَبَّهَا فَذَاكَ مِنْ أَشْرَاطِهَا وَإِذَا رَأَيْتَ الْحُفَاةَ الْعُرَاةَ الصُّمَّ الْبُكْمَ مُلُوكَ الْأَرْضِ فَذَاكَ مِنْ أَشْرَاطِهَا وَإِذَا رَأَيْتَ رِعَاءَ الْبَهْمِ يَتَطَاوَلُونَ فِي الْبُنْيَانِ فَذَاكَ مِنْ أَشْرَاطِهَا فِي خَمْسٍ مِنْ الْغَيْبِ لَا يَعْلَمُهُنَّ إِلَّا اللَّهُ ثُمَّ قَرَأَ { إِنَّ اللَّهَ عِنْدَهُ عِلْمُ السَّاعَةِ وَيُنَزِّلُ الْغَيْثَ وَيَعْلَمُ مَا فِي الْأَرْحَامِ وَمَا تَدْرِي نَفْسٌ مَاذَا تَكْسِبُ غَدًا وَمَا تَدْرِي نَفْسٌ بِأَيِّ أَرْضٍ تَمُوتُ إِنَّ اللَّهَ عَلِيمٌ خَبِيرٌ }[سورة لقمان 34] قَالَ ثُمَّ قَامَ الرَّجُلُ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رُدُّوهُ عَلَيَّ فَالْتُمِسَ فَلَمْ يَجِدُوهُ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ هَذَا جِبْرِيلُ أَرَادَ أَنْ تَعَلَّمُوا إِذْ لَمْ تَسْأَلُوا.

It was narrated that Abu Hurairah said: "The Messenger of Allah (s.a.w) said: 'Ask me.' But we were too intimidated to ask him. Then a man came and sat at his knees and said: 'O Messenger of Allah, what is Islam?' He said: 'To not associate anything with Allah, to establish the Salat, to pay the Zakat, and to observe fast (the month of) Ramadan.' He said: 'You have spoken the truth.' He said: 'O Messenger of Allah, what is faith?' The Messenger of Allah (s.a.w) said: 'To believe in Allah, His Angels, His Book, the meeting with Him, and His Messengers, and to believe in the Resurrection, and to believe in Al-Qadar (the divine decree), all of it.' He said: 'You have spoken the truth.' He said: 'O Messenger of Allah, what is Al-Ihsan?' He said: 'To fear Allah as though you can see Him, for although you cannot see Him, He indeed sees you.' He said: 'You have spoken the truth.' He said: 'O Messenger of Allah, when will the Hour begin?' He said: 'The one who is asked about it does not know more than the one who is asking. But I shall tell you of its portents: When you see a woman giving birth to her master, that is one of its portents. When you see the barefoot, naked, deaf and dumb ruling the earth, that is one of its portents. When you see the herders of sheep competing in the construction of lofty buildings, that is one of its portents. (It is) among five things which no one knows except Allah.' Then he recited: "Verily, Allah, with Him (Alone) is the knowledge of the Hour, He sends down the rain, and knows that which is in the wombs. No person knows what he will earn tomorrow, and no person knows in what land he will die...' until the end of the Surah." He said: "Then the man stood up (and left), and the Messenger of Allah (s.a.w) said: 'Bring him back to me.' They looked, but they could not find him. The Messenger of Allah (s.a.w) said: That was Jibril, who wanted to teach you since you did not ask."'