Shabbos 10:4-5

Shabbos 10:4

If a person intended to carry something in front of him but it swung around to be behind him, he is exempt (because he carried it in a less effective manner than intended). If he intended to carry it behind  him but it swung around to be in front of him, he is liable (because he carried it in a more effective manner than intended). If a woman carries something in her apron, whether in front or behind her, she is liable because its nature is to shift around. Rabbi Yehuda says the same is true of messengers.

Shabbos 10:5

If a person carried a loaf of bread into the public domain, he is liable; if two people carried it between them, they are exempt. If one person could not carry it alone and two carried it, they are liable but Rabbi Shimon exempts them. If one carries food smaller than the liable measure in a container, he is exempt even for carrying the container because it’s subordinate to the food. If one carries a live person in a bed, he is exempt even for carrying the bed because it’s subordinate to the person. If one carries a deceased person in a bed, he is liable. Similarly, one is liable for carrying an olive-sized portion of human flesh or of carrion, or a lentil-sized portion of a “crawling thing,” though Rabbi Shimon says that he is exempt.