The people started asking the Prophet ﷺ too many questions importunately. So one day he ascended the pulpit and said, "You will not ask me any question but I will explain it to you." I looked right and left, and behold, every man was covering his head with his garment and weeping. Then got up a man who, whenever quarreling with somebody, used to be accused of not being the son of his father. He said, "O Messenger of Allah ﷺ! Who is my father?" The Prophet ﷺ replied, "Your father is Hudhaifa." Then ʿUmar got up and said, "We accept Allah as our Lord, Islam as our religion and Muhammad as our Apostle and we seek refuge with Allah from the evil of afflictions." The Prophet ﷺ said, " I have never seen the good and bad like on this day. No doubt, Paradise and Hell was displayed in front of me till I saw them in front of that wall," Qatada said: This Hadith used to be mentioned as an explanation of this Verse:-- 'O you who believe! Ask not questions about things which, if made plain to you, may cause you trouble.' (5.101)  

سَأَلُوا النَّبِيَّ ﷺ حَتَّى أَحْفَوْهُ بِالْمَسْأَلَةِ فَصَعِدَ النَّبِيُّ ﷺ ذَاتَ يَوْمٍ الْمِنْبَرَ فَقَالَ لاَ تَسْأَلُونِي عَنْ شَىْءٍ إِلاَّ بَيَّنْتُ لَكُمْ فَجَعَلْتُ أَنْظُرُ يَمِينًا وَشِمَالاً فَإِذَا كُلُّ رَجُلٍ رَأْسُهُ فِي ثَوْبِهِ يَبْكِي فَأَنْشَأَ رَجُلٌ كَانَ إِذَا لاَحَى يُدْعَى إِلَى غَيْرِ أَبِيهِ فَقَالَ يَا نَبِيَّ اللَّهِ مَنْ أَبِي فَقَالَ أَبُوكَ حُذَافَةُ ثُمَّ أَنْشَأَ عُمَرُ فَقَالَ رَضِينَا بِاللَّهِ رَبًّا وَبِالإِسْلاَمِ دِينًا وَبِمُحَمَّدٍ رَسُولاً نَعُوذُ بِاللَّهِ مِنْ سُوءِ الْفِتَنِ فَقَالَ النَّبِيُّ ﷺ مَا رَأَيْتُ فِي الْخَيْرِ وَالشَّرِّ كَالْيَوْمِ قَطُّ إِنَّهُ صُوِّرَتْ لِي الْجَنَّةُ وَالنَّارُ حَتَّى رَأَيْتُهُمَا دُونَ الْحَائِطِ قَالَ قَتَادَةُ يُذْكَرُ هَذَا الْحَدِيثُ عِنْدَ هَذِهِ الآيَةِ {يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ}  

The the above hadith was narrated by Anas through another chain and said (with the wording) "and every man had his head wrapped in his garment and weeping". And he said (with the wording) "seeking refuge with Allah from the evil of afflictions" or he said "I seek refuge with Allah from the evil of afflictions."  

أَنَّ نَبِيَّ اللَّهِ ﷺ بِهَذَا وَقَالَ كُلُّ رَجُلٍ لاَفًّا رَأْسَهُ فِي ثَوْبِهِ يَبْكِي وَقَالَ عَائِذًا بِاللَّهِ مِنْ سُوءِ الْفِتَنِ أَوْ قَالَ أَعُوذُ بِاللَّهِ مِنْ سُوءِ الْفِتَنِ  

The above hadith is narrated on the authority of Anas thorugh another chain and he said (with the wording) "seeking refuge with Allah from the evil of afflictions."  

عَنِ النَّبِيِّ ﷺ بِهَذَا وَقَالَ عَائِذًا بِاللَّهِ مِنْ شَرِّ الْفِتَنِ