Bisha'a or Bisha (Arabic: بِشْعَة; ordeal by fire, trial by fire or fire test) is a ritual practiced by some Muslim Bedouin tribes of the Judean, Negev and Sinai deserts for the purpose of lie detection. It is also practiced, and is said to have originated among, some Bedouin tribes of Saudi Arabia. It is the best-known of various forms of trial by ordeal which are practiced by the Bedouin. It is one of the rituals in the Bedouin justice dispensary system for maintaining Sharaf - the Bedouin honor code.