大比丘三千威儀 2.88

2.88

正坐有五事：一者不得倚壁、二者不得以兩手前據、三者不得以肘據床、四者不得伏臥以兩手捧頭、五者不得以手指拄頰。

Sitting upright has five matters: first, one must not lean against the wall; second, one must not lean forward with both hands; third, one must not prop oneself on the bed with the elbows; fourth, one must not lie prone cradling the head with both hands; fifth, one must not prop the cheek with the fingers.