In Islam, Adam عليه السلام is described in authentic hadith as being created sixty cubits tall (around 27–30 meters), making him far larger than modern humans, and humanity has been gradually decreasing in size ever since; the Prophet Muhammad ﷺ said that people continued to diminish in stature after Adam. Islamic sources also mention powerful and exceptionally large ancient peoples, such as ʿĀd (the people of Prophet Hūd), whose great physical strength and towering structures are referenced in