Tohoros 10:5-6

Tohoros 10:5

If a person eats grapes from the baskets or from what’s spread out on the ground, the wine press remains ritually clean even if the grapes burst and drip into the press. Let’s say that he was eating grapes from a large basket or from what’s spread out on leaves (to catch the juice) and a single grape fell into the press. If it still has the stalk sealing the juice in, everything in the press remains clean; if not, then everything in the press is rendered unclean. Let's say that he dropped some grapes and tread upon them in an empty part of the wine press. If the volume of the grapes was exactly that of an egg, the contents of the press remain clean; if more than the volume of an egg, the contents are rendered unclean. This is because as soon as the first drop of juice came out, it was rendered impure by the rest, which is the volume of an egg.

Tohoros 10:6

Let’s say that someone was standing and talking by the edge of a wine pit and some saliva came out of his mouth. If there’s a doubt as to whether or not it reached the pit, the doubtful situation is ruled to be ritually clean.