It was narrated from 'Abdullah bin 'Amr bin 'As that:the Messenger of Allah (ﷺ) said: 'Allah will not take away knowledge by removing it from people (from their hearts). Rather He will take away knowledge by taking away the scholars, then when there are no scholars left, the people will take the ignorant as their leaders. They will be asked questions and they will issue verdicts without knowledge, thus they will go astray and lead others astray
هـSunan Ibn MajahHadith 4045SahihNarrated by It wasسنن ابن ماجهرقم ٤٠٤٥
It was narrated that Anas bin Malik said:“Shall I not tell you a Hadith that I heard from the Messenger of Allah (ﷺ), which no one will tell you after me? I heard it from him (saying): ‘Among the portents of the Hour are that knowledge will be taken away and ignorance will prevail, illegal sex will become widespread and wine will be drunk, and men will disappear and women will be left, until there is one man in charge of fifty women.”
هـSunan Ibn MajahHadith 4052SahihNarrated by It wasسنن ابن ماجهرقم ٤٠٥٢
It was narrated from Abu Hurairah in a Marfu’ report (meaning, attributed to the Prophet (ﷺ)):“Time will pass quickly, knowledge will decrease, miserliness will be cast into people’s hearts, tribulations will appear and there will be much Harj.” They said: “O Messenger of Allah, what is Harj?” He said: “Killing.”
Grades by collection
Sahih al-Bukhari451
Sahih Muslim464
Sunan Abi Dawud151
Jami' at-Tirmidhi338
Sunan an-Nasa'i50
Sunan Ibn Majah437
Muwatta Malik8
al-Mustadrak (al-Hakim)627
Musnad Ahmad716
Sunan ad-Darimi21
Kitab al-Fitan (Nu'aym ibn Hammad)1,988
SahihHasanDa'if (weak)Ungraded
Bukhari and Muslim are sahih by inclusion. For the others the bar follows al-Albani's verdict where he graded, then Zubair Ali Zai. Every verdict is on each card.