I was sitting with 'Abdullah and Abu Musa that they reported Messenger of Allah ﷺ having said: Prior to the Last Hour, there would be a time when knowledge would be taken away, and ignorance would take its place and there would be bloodshed on a large scale.
كُنْتُ جَالِسًا مَعَ عَبْدِ اللَّهِ وَأَبِي مُوسَى فَقَالاَ قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ بَيْنَ يَدَىِ السَّاعَةِ أَيَّامًا يُرْفَعُ فِيهَا الْعِلْمُ وَيَنْزِلُ فِيهَا الْجَهْلُ وَيَكْثُرُ فِيهَا الْهَرْجُ وَالْهَرْجُ الْقَتْلُ