זבים-טבול יום

(3) [If] a Zav and a clean person sat [together] on a big boat, [but] what is a big boat? Rabbi Yehuda says, One that does not sway with a man's weight, [or if] they sat on a plank, bench or bed frame or a beam when they are firmly secure, [or] they went up into a tree that is strong, or in a branch that is strong [or they they were climbing] on a Tyrian ladder or an Egyptian [ladder] that was secured [to a wall] with a nail, [or] on a ramp or a rafter or on a door when clay was used [to secure them in the ground], even [only] on one side, they are clean. A clean person that hit an unclean person [he remains] clean. [If] an unclean person hits a clean person, [the clean person] becomes unclean, because if the clean person draws [back, as he is being hit], the unclean person would surely fall, thus it is as if the zav had actually leaned on the clean person and that renders him unclean].

(1) If one [who is clean] touches a zav or if a zav touches him, [or] if one moves a zav, or if a zav moves him, he renders unclean food, drink and utensils that can be rinsed [immersed in a mikva and thereby made clean] through touch, but not through carryinng. Rabbi Yehoshua stated [the following] general principle, Anyone that renders garments unclean while in contact [with the source of his uncleanliness], renders unclean food and liquids to become a first level uncleanliness and the hands to become a second level of uncleanliness, and does not render unclean people or earthenware vessels. After he has separated from the source of his uncleanliness, he renders unclean liquids to become a first level uncleanliness, and food and hands to become a second level of uncleanliness, and he does nor tender garments unclean.

(7) If one separating terumah from a vat [of wine] said: "Let this be terumah, provided it comes up in peace," [this is understood to mean] in peace from breakage or spillage, but not from impurity. Rabbi Shimon says: even from impurity. If it broke [and the wine fell back into the vat], it does not make [the contents of the vat] into demai [produce from which it is uncertain whether terumah or tithes were already taken]. Up to how far away can it break and [still] not make [the contents of the vat] into demai? [Far enough] such that it rolls back to reach the vat. Rabbi Yose says: even regarding one who had the intention of making such a stipulation, but did not stipulate, if it broke, it does not make the [contents of the vat] into demai, for this is a stipulation of the court.