一切經音義 37.18

37.18

蹙其上節（并育反以二中指蹙上節如寶形從戚從足經文有從就從足作蹵非也）。

Press the upper joints together (蹙其上節) (bing + yu fan. Press the upper joints together with the two middle fingers to form the shape of a jewel. Composed with 戚 semantic and 'foot' [足] semantic. In the scripture text it is written with 就 and 'foot' [足] as 蹵, which is erroneous).