In accordance with the development of Buddhism in China and Japan, the 'soni-ryo' or Monks and Nuns Act, which determined the regulation of monks and nuns (not of Buddhism itself) was introduced as part of Ritsuryo law.
中国や日本では仏教の発展に伴い律令法の中に僧尼の統制（仏教そのものの統制ではない）を定めた法令（僧尼令）が導入された。