Whether liquids prepare items for Impurity if the item is in a vessel with/without a hole: Shabbat 95b, Pesachim 16a
Above, if a root of the plant in the vessel extends opposite a hole in the bottom of the vessel: Shabbat 95b
A vessel with a hole in it towards the bottom: Shabbat 95b
Size of a clay pot's hole to render the plant inside the pot "connected to the ground" beneath: Shabbat 95b-96a
Grain soaked in water: Moed Katan 13b
Whether liquid which is produced and immediately runs into solid food will make it eligible to receive impurity: Shabbat 144b
Impurity of liquids does not require preparation of those liquids for impurity: Pesachim 18b
Liquids which are being destroyed: Shabbat 145a
Whether an impure nursing mother's milk is treated as food, such that it would need to be touched by a liquid in order for it to be capable of communicating impurity: Keritot 13a
A liquid only makes an item eligible to receive impurity if the item is exposed to the liquid intentionally
Only a liquid which is desirable prepares items for Impurity, and therefore one must harvest grapes in purity, but not olives: Pesachim 3b
There must be desire for the liquid while it is falling on to the item or while it is on it: Bava Metzia 22b
Counting an infant's intent as intent: Keritot 13b
Counting intent to feed something to an animal as intent: Keritot 21a
Water
One can assume that the grain of Nochrim from the cities is impure, because it was probably soaked, which prepares items for Impurity: Pesachim 40a
Water which is [non-juice] from a fruit; where it is [not] desired: Shabbat 144b; Keritot 15b
Swamp water: Sanhedrin 5b
The raw (watery) part of an egg: Sanhedrin 5b
The status of juice emerging when one crushes fruit: Keritot 15b, but see Tosafot that this refers to rainwater that was on the fruit
The status of water [Tosafot - rainwater] that one squeezes from his hair or clothing: Keritot 15b
Rainwater brushed from one's clothing: Keritot 15b
Dew
If the owner is happy before it dries: Bava Metzia 22a
If the owner is happy after it dries: Bava Metzia 22a-b
Milk
Human milk, where it was [not] desired: Shabbat 143b-144b
Animal milk, where it was [not] desired: Shabbat 143b-144b
Milk which was let out for medicinal purposes: Shabbat 144a
Milk produced into solid food, by one who is Tamay: Shabbat 144b
Oil
Oil which drips from baskets of olives, [not] against one's will: Shabbat 144a
Wine
Wine which drips from baskets of grapes, [not] against one's will: Shabbat 144a
Dam [Blood]
Green blood: Niddah 19b
Blood from Offerings does [not] prepare the item for Impurity: Pesachim 16a-b, 20a, 22b
Water and Blood from Slaughtered Offerings do not prepare items for impurity: Pesachim 20a
Blood which is squeezed from the blood vessel does not prepare items for impurity; it must be the blood with which the Life departs: Pesachim 16b; Niddah 19b; Keritot 22a
Blood from a human wound: Shabbat 143b-144b
Blood from an animal's wound: Shabbat 143b-144b
Blood from a training shechitah: Bechorot 10b
Blood which was let out for medicinal purposes: Shabbat 144a
Defining the "blood of life [dam hanefesh]," regarding its ability to enable food to communicate impurity, based on its color and the strength of its flow: Keritot 22a