Haibu (haimu) refers to a ritual of bowing which includes sayusa (a series of movement from left to right to left) for expressing one's gratitude on occasions such as joi (investiture of a court rank), appointment, and shiroku (receiving a stipend) in the Imperial Court during the Heian period.
拝舞（はいぶ、はいむ）は、平安時代、宮中で、叙位、任官、賜禄の際などに、謝意を表して左右左(さゆうさ)を行う礼である。