(Imām Bukhārī narrates): Al-Makkī ibn Ibrāhīm narrated to us, he said: Hanzalah ibn Abī Sufyān narrated to us, from Sālim, he said: I heard Abū Hurairah, may Allāh be pleased with him, that the Prophet ﷺ said:

Knowledge will be lifted away, and ignorance and tribulations will appear, and harj will occur abundantly. It was asked of him: O Messenger of Allāh! What is harj? He gestured, passing his hand across the neck, as if he intended killing by this word.