The prayer wheel is a means of simulating the chant of a mantra by physically revolving the object several times in a clockwise direction. It is widely seen among Tibetan people. In order not to desecrate religious artifacts such as Stupas, mani stones, and Gompas, Tibetan Buddhists walk around them in a clockwise direction, although the reverse direction is true for Bön. Tibetan Buddhists chant the prayer "Om mani padme hum", while the practitioners of Bön chant "Om matri muye sale du".