一切經音義 18.139

18.139

囹圄（上歷丁反下魚舉反獄名周禮三王始有獄釋名云囹者領也圄者禦也謂領錄囚徒禁禦之也說文囹獄也圄守之也外形內聲字也）。

Prison (囹圄: the first character has the fanqie l[ì] + [d]īng; the second character has the fanqie y[ú] + [j]ǔ; names for prison. The Zhouli states that prisons first existed under the Three Kings. The Shiming says: "Ling (囹) means to manage (ling 領); yu (圄) means to restrain (yu 禦)"; meaning to register prisoners and hold them in custody. The Shuowen says: "Ling means prison; yu means to guard it." Both are characters with an outer semantic frame and inner phonetic element).