Narrated Anas:

Allah's Apostle ﷺ said, "From among the portents of the Hour are (the following): 1. Religious knowledge will be taken away (by the death of Religious learned men). 2. (Religious) ignorance will prevail.

3. Drinking of Alcoholic drinks (will be very common). 4. There will be prevalence of open illegal sexual intercourse.

حَدَّثَنَا عِمْرَانُ بْنُ مَيْسَرَةَ، قَالَ حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ أَبِي التَّيَّاحِ، عَنْ أَنَسٍ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " إِنَّ مِنْ أَشْرَاطِ السَّاعَةِ أَنْ يُرْفَعَ الْعِلْمُ، وَيَثْبُتَ الْجَهْلُ، وَيُشْرَبَ الْخَمْرُ، وَيَظْهَرَ الزِّنَا ".