Women and the prohibition against using Leaven: Pesachim 43a-b
Prohibiting Benefit as well as Ingestion: Pesachim 21b, 23a, 23b, 25a, 27b, 32a-b
Time of Prohibition: Pesachim 4a-5a, 11b, 12b, 28b, 96a, 96a-b
At which times the consumption of leaven warrants a punishment of Divine Ex-Communication: Pesachim 27b, 28a-29b
From the time when the Rabbinic Prohibition sets in, the Leaven no longer belongs to its owner, except for liability for the prohibition against owning the Leaven: Pesachim 6b-7a
Minimum threshold of consumption or possession of leaven, to trigger liability: Olive Amount or Date Amount: Yuma 79b; Pesachim 50a; Beitzah 2a, 7b
Combining grain, flour and dough for the amount triggering violation: Menachot 70b Combining Permitted items with Leaven for the Threshold: Pesachim 44a
Benefiting from the Destructive Process: Pesachim 21b
The punishment: Makkot 13a
General Definition of Leaven
"Chametz [Leaven]", as Separate from "Sior [Sourdough]": Pesachim 23a; Beitzah 2a, 7b
Leaven which was leavened by an outside agent: Pesachim 28b, 43a Rice, Millet, and "Karmit": Pesachim 35a, 114b
If an item is considered significant as far as the Prohibition against use of Leaven, that makes it significant for the laws of [chatzitzah] separations between skin & clothing for certain laws, or atop the skin for immersion, during Pesach: Pesachim 46a
If an item is considered important for the Prohibition against use of Leaven on Pesach, that makes it significant for laws of [chatzitzah] separations atop a vessel, during Pesach, to prevent Impurity of Vessels: Pesachim 46a
Time required for standard leavening: Pesachim 46a
Definition of Leaven, in the Grain/Flour Stage
Leaven which is Already Prohibited as Un-Tithed Produce: Pesachim 35b-36a
Defining Leaven as any grain which could qualify for use as Matzah: Pesachim 35a
Barley which split, or is about to split, from soaking in water: Pesachim 40a
Flour in a leather-worker's mixing bowl, within 3 days of placement there, if it has/hasn't been used for skins since: Pesachim 45b
Definition of Leaven, in the Dough Stage
Inedible Leaven: Pesachim 7a, 21b, 43a
"Siur" - inedible, partially leavened dough: Pesachim 43a
Sourdough which is inedible, and is in a vessel which has been coated with clay to be used for a chair: Pesachim 45b
Dough kneaded with Wine, Olive Oil, or Honey: Pesachim 35a-b, 36a
Treating the surface of the dough with the above-listed liquids: Pesachim 36a
Whether Fruit Juice leavens dough: Pesachim 35a-b, 39b, 40a
2 half-Olive amounts, connected by a string of dough, in various locations where they have a lesser or greater chance of being pushed together: Pesachim 45b
Dough in the cracks of a mixing bowl, where there is/isn't a Olive amount in one spot: Pesachim 45a-b
Above case, where he wants or doesn't want the dough there: Pesachim 45a-b
Above case, differentiating based on where it is in the mixing bowl: Pesachim 45b
Symptoms used in Gauging the stage of a dough's leavening: Pesachim 48b
Gauging the status of dough whose leavening-level cannot be determined: Pesachim 46a
Definition of Leaven, in the Bread Stage
Bread which is no longer edible for a human: Pesachim 45b
Bread which is inedible, but is kept for another purpose: Pesachim 45b
Leaven which was singed before the Prohibition set in: Pesachim 21b
Buried Leaven: Pesachim 6a, 8a, 31b
The Degree of Burial is a Depth at which a Dog wouldn't sense it and dig after it - 3 Hand-Breadths: Pesachim 31b, Bava Metzia 42a
Vessels used with Leaven
Vessels used with Leaven: Pesachim 30a-b Vessels used with Cold Leaven: Pesachim 30b Vessels used with Strong Yeast or with Vinegar: Pesachim 30b
