I will narrate to you a Hadith and none other than I will tell you about after it. I heard Allah's Messenger (ﷺ) saying: From among the portents of the Hour are (the following): -1. Religious knowledge will decrease (by the death of religious learned men). -2. Religious ignorance will prevail. -3. There will be prevalence of open illegal sexual intercourse. -4. Women will increase in number and men will decrease in number so much so that fifty women will be looked after by one man.
Sahih al-Bukhari Book 3, Hadith 23
← Previous Hadith Allah's Messenger (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.

Sahih al-Bukhari Book 3, Hadith 22 Next Hadith → Allah's Messenger (ﷺ) said, "While I was sleeping, I saw that a cup full of milk was brought to me and I drank my fill till I noticed (the milk) its wetness coming out of my nails. Then I gave the remaining milk to `Umar Ibn Al-Khattab" The companions of the Prophet (ﷺ) asked, "What have you interpreted (about this dream)? "O Allah's Messenger (ﷺ) ,!" he replied, "(It is religious) knowledge."

Sahih al-Bukhari Book 3, Hadith 24