John Lightfoot on Mark 9:43

[Cut it off.] "Rabh Mona, in the name of R. Judah, saith, A drop of cold water in the morning [applied to the eye], and the washing of the hands and feet in the evening, is good beyond all the collyrium [eyesalve] in the whole world. For he said, The hand applied to the eye [in the morning, before washing], let it be cut off. The hand applied to the nostril, let it be cut off: the hand put to the ear, let it be cut off," &c.