續一切經音義 5.231

5.231

𰆓踝（上息七反古文膝字從卪音節從𣷚音七聲今從肉作膝說文骹骨也下華瓦反前經第一卷已釋）。

𰆓踝 (The first character has the fanqie *xi* + *qi* [xi]; it is the ancient character for 'knee' (膝), composed of 卪 (pronounced *jie*) and the phonetic 𣷚 (pronounced *qi*). Nowadays it is written with the 'flesh' classifier as 膝. The *Shuowen* states: "The joint bone of the leg." The second character has the fanqie *hua* + *wa* [huai], which has already been explained in Fascicle One of the sūtra.)