Challah 2:3-4

Challah 2:3

A woman can sit and separate challah while naked but a man may not because a woman’s genitals can be concealed when she sits. If a person is ritually unclean and unable to go to the mikvah, he should make his dough in smaller quantities that do not require challah rather than make ritually-unclean challah that would have to be burned. Rabbi Akiva disagrees: he says that it’s better to make ritually-unclean challah that has to be burned than to make smaller quantities because even if it can’t be given to a kohein, he’s still participating in the mitzvah of challah.

Challah 2:4

If one makes two separate doughs of one kav each (too small to require challah) and the doughs touch, they remain exempt from challah unless they stick together. Rabbi Eliezer says that if he takes the loaves out of the oven and puts them in a basket, the basket causes them to combine for the purposes of challah.