大比丘三千威儀 2.26

2.26

There are further five matters: first, when someone comes to offer something and their hand gets near, one should wash hands again; second, one must not hold it high and drop it into the pātra; third, if one sees something displeasing, one should not eat it, nor should one let the persons to one's left and right know; fourth, during the meal, one must not spit in front of the sthavira; fifth, if one eats when one should not eat, one falls into an offense.