Narrated
Abū Hurairah رضي الله عنه:
The Prophet ﷺ said, “(Religious)
knowledge will be taken away (by the death of religious scholars) ignorance (in
religion) and afflictions will appear; and Harj will increase.” It was asked, “What
is Harj, O Allah’s Messenger ﷺ?” He replied by beckoning with his hand indicating “killing.”
Fath-al-Bari, page 192, Vol.1
Sahih al-Bukhari, Book of Knowledge (Book 3), Hadith 27, Vol.
1, Hadith no. 85, Translated by Muhsin Khan.
https://markazbukhari.com