Jordan contains Holy sites pertaining to at least ten different ancient Holy Prophets and the tombs of twenty of the Prophet Mohammed's companions. The most famous are: the Prophet Haron, Jethro, Joshua, Job and Moses, and companions Ja'far bin Abi Talib, Zeid bin Al-Haritha and Ubu Ubaydah bin Al-Jarrah. Jordan also is blessed with the site of the Cave of the Seven Sleepers mentioned in the Quran, Surah 18.