I cannot count how many times I saw Abu Hurayrah standing in the marketplace saying, "Knowledge will be taken away, tribulations will appear, and harj will increase."Someone asked, "Messenger of Allah, what is harj?"He gestured with his hand like this and turned it sideways.
حدثنا إسحاق بن سليمان قال سمعت حنظلة بن أبي سفيان سمعت
ما أدري كم رأيت أبا هريرة قائما في السوق يقول يقبض العلم وتظهر الفتن ويكثر الهرج قال قيل يا رسول الله وما الهرج قال بيده هكذا وحرفها
Its chain of transmission is sahih. Ishaq bin Sulayman Razi Abdi, his reliability was already established at 452 and 4975, and I add here the statement of Ibn Wahdah Andalusi, "Reliable, firmly established in hadith, greatly devoted to worship." Ibn Saad gave his biography at 7/2/110, and so did Ibn Abu Hatim at 1/223–224.This hadith has already appeared in similar form at 7540, from Ibn Numayr, from Hanzala, but it does not contain the gesture with the hand as an allusion to killing. Rather it has, He said, "Killing." Bukhari related it at 1:165 from Makki bin Ibrahim, from Hanzala, and it has, So he gestured like this with his hand, and turned it, as though he meant killing.As for the narration of Ishaq bin Sulayman, the one found here, the Hafiz pointed out in al-Fath that Ismaili related it by way of Ishaq, in a manner similar to the narration in the Musnad. The Hafiz said, He mentioned it as stopped, but it became clear at its end that it is actually raised.His words, "and turned it," come from the turning and movement of the hand, as one who strikes with it. By this he alludes to killing. Ibn Athir said, "By it, he described the cutting edge of the sword."