1. The Mishnah (75b) understands that a person is liable for carrying even a minute amount of something on Shabbos, if he considered it significant before Shabbos.
2. The Mishnah discusses the amount of animal food one must carry in order to be liable for carrying on Shabbos.
3. There is a dispute about whether food for one animal is considered food for a different animal.
4. A person must carry an amount of food (fit for human consumption) the size of a fig in order to be liable for carrying on Shabbos.
5. The opposite law applies to the separation of Chalah. The bran and other insignificant parts are included in the calculation of the amount for separating Chalah.
A BIT MORE
1. This is in contrast to the opinion of Rebbi Shimon ben Elazar, who says that even if a different person carries this minute amount he is liable, due to the designation established by his friend.
2. These different amounts do not combine with each other until they form a significant amount of food for one type of animal.
3. The case is where an amount of camel food that was not enough to feed a camel was carried in order to be given to a cow, which would normally eat that amount but only eats that type of food in a pressing situation. Rebbi Yochanan: The person who carried the food is exempt, since the presence of a pressing situation does not create a significant amount. Reish Lakish: He is liable.
4. This is the amount of the food that must be edible, excluding peels and shells and the like that do not combine to make this amount.
5. This is because it is common for people to use these parts of the grains in their bread.