一切經音義 16.231

16.231

交趺（又作跗同府于反三蒼跗足上也謂交足而坐也經中多作加趺山東名甲趺經文從足作跤非也）。

Cross-legged (交趺) (also written 跗, identical fanqie: 府 + 于; the Sancang says: "跗 is the upper part of the foot." It refers to sitting with feet crossed. In the scriptures it is often written 'additionally crossed' (加趺); in the Shandong region it is called 'armor crossed' (甲趺). The scripture text classifies it under the foot radical as 跤, which is incorrect).