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1. The Gemara clarifies how Shi'urim and Onshim are Halachos l'Moshe mi'Sinai.
2. Everyone, regardless of his size, is liable for eating on Yom Kippur if he eats an amount of food the size of a large date.
3. One is liable for drinking a cheekful of liquid on Yom Kippur.
4. The Gemara says that the salt in meat and brine in vegetables are considered part of the meat and vegetables (respectively) on Yom Kippur.
5. If someone eats so much before Yom Kippur to the point that he cannot eat any more, and yet nevertheless continues to stuff himself on Yom Kippur, he is exempt from liability for eating on Yom Kippur.


1. The Gemara explains that these two elements are actually one Halachah l'Moshe mi'Sinai: the Halachah l'Moshe mi'Sinai teaches the amount of forbidden food (for example) that one must eat in order to be liable for the punishment stated in the Torah for that particular transgression.
2. The Gemara says that even a giant gets some satisfaction when he eats food the size of a large date.
3. This amount is measured by how much liquid he would have to drink such that the amount, if moved to one side of his mouth, would make his cheek look full.
4. Accordingly, the salt and brine combine with the meat and vegetables to make an amount equal to the size of large date (for which one is liable for eating on Yom Kippur).
5. Since the food he eats on Yom Kippur is repulsive to him, it is not considered an act of eating. One is liable only for an act of eating which reduces his sense of affliction, but this act of eating increases his sense of affliction.

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