This movement was linked to the originally unrelated term, "wayo," in the Article 32 of Meirei-ritsu, and then "Hossoshiyosho" (The Essentials for the Judiciary), a collection of ritsuryo law and primary court noble law as well as theories of lawyers, stated "what was transferred based on wayo shall not be restored," which became established in society as a kind of legal maxim of the court noble law P806.
それが、名例律32条の条文にあった本来無関係の「和与｣の語句と結び付けられ、律令法・初期公家法及び明法家学説の集大成である『法曹至要抄』には「和与物不悔返事（和与した物は悔返してはならない）」と記され、公家法における一種の法諺として社会に定着することになったP806。