釋門歸敬儀 2.9

2.9

The fifth is called the auspicious bow (jibai), which means bowing and then pressing the forehead to the ground (ji sang); it refers to mourning attire of trimmed hemp or without staff and below. It is called "auspicious" because this was an inauspicious bow in the Yin dynasty. The Zhou considered it close to the auspicious bow and the kowtow, so they called it an auspicious bow; that is, first making the bow of placing the head on the ground, and afterward pressing the forehead to the ground. Sang means the forehead. Touching the ground with the forehead has no dignified deportment.