Sahih Bukhari · Hadith 7153

حدثنا محمد، حدثنا غندر، حدثنا شعبة، عن واصل، عن أبي وائل، عن عبد الله، وأحسبه، رفعه قال ‏"‏ بين يدى الساعة أيام الهرج، يزول العلم، ويظهر فيها الجهل ‏"‏‏.‏ قال أبو موسى والهرج القتل بلسان الحبشة‏.‏

Narrated `Abdullah: The Prophet said, "Near the establishment of the Hour, there will be the days of Al-Harj, and the religious knowledge will be taken away (vanish i.e. by the death of Religious scholars) and general ignorance will spread." Abu Musa said, "Al-Harj, in the Ethiopian language, means killing," Ibn Mas`ud added: I heard Allah's Apostle saying; (It will be) from among the most wicked people who will be living at the time when the Hour will be established."

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).