Pg 36: On the Sabbath, one can place food to warm up on an oven or heating element whose temperature cannot be changed.
Pg 37: If one put ashes on coals and they flared up, one may leave fully heated water or fully cooked food over the coals.
Pg 38: Sabbath: can’t cook an egg by placing next to a hot kettle, burying in hot sand or frying it on a sun-heated surface.
Pg 39: Whenever there are 2 opinions and a 3rd comes & mediates, the law follows the mediator.
Pg 40: Can place cold water close enough to a heat source on the Sabbath only to take the chill out, but not to heat it up.
Pg 41: If one ate and didn’t take a walk afterwards, the food in his body spoils and he generates bad breath.
Pg 42: On the Sabbath, can’t place a dish under a lamp to catch the oil. Can place it before the Sabbath.
Pg 43: If an egg is laid on the Sabbath, one can’t touch it, but can cover it with a utensil so it doesn’t break.
Pg 44: One can carry an unlit, never-used lamp on the Sabbath. However, if it’s been used, it can’t be touched.
Pg 45: Useful Sukah decorations (cloths, fruits, grains, etc.) can’t be used until after the last day of the Sukot festival.
Pg 46: When a woman makes a vow, she has in mind that her husband can annul the vow.
Pg 47: Poor man’s garment doesn’t become impure if it’s in the possession of a rich man as they don’t consider it a garment.
Summary Chapter 3: “Kirah”: Prohibitions and permissibility as to leaving food to cook or warm on different types of ovens or heating structures on the Sabbath. In general, if the food was cooked sufficiently before the Sabbath, or if there is no likelihood of adjusting the heat, then it’s permissible to leave the food over the heat source.
Cooking with fire is biblically prohibited. All other cooking methods are rabbinically prohibited.
Utensils that are exclusively used for an action that is prohibited on the Sabbath are “muktzeh” and can’t be handled on the Sabbath.