جامع الترمذي

Narrated Abu Hurairah: that the Messenger of Allah (ﷺ) said: "People will be gathered in three classes on the Day of Resurrection: A class walking, a class riding, and a class upon their faces." It was said: "O Messenger of Allah! How will they walk upon their faces?" He said: "Indeed the One Who made them walk upon their feet, is able to make them walk upon their faces. Verily they will try to protect their faces from every bump and thorn."