Hakushu 拍手 (神道) is a word used to refer to ceremonial clapping in Shinto.[1] It is also known as Kashiwade.
It is a part of the two bows, two claps, one bow practice done when praying at a shrine in Japan.[2][3][4][5][6]
Ceremonial clapping is quiet and soft.[7]
It is considered to have a Buddhist meaning with the right hand meaning Buddha and the left hand meaning all beings so unification of Buddha and all beings.[8] As Buddhism and shinto have been together for so long it is unclear which one it originated from.[9]
The practice is present in Aikido[10][11] and Bujinkan.[12]