續一切經音義 2.107

2.107

Passing the knees (過膝: the second character has the fanqie 𦙃 + 逸; Yupian says, “The knee is the upper part of the shin.” Shuowen says, “The joint of the shinbone.” The standard form takes 月 and 𣷚, written as 𦡀; this character 𦡀 has long been in customary use. Some sūtras write 𦡀, which is completely mistaken).