(a) A private individual is obligated to separate - one twenty-fourth from his dough, if he is baking ...
1. ... either for himself ...
2. ... or for his son's wedding (because of 'Lo P'lug').
(b) Whereas a baker who is baking to sell to sell in his shop (and who baked larger quantities) must separate - only one forty-eighth ...
(c) ... and so does a private woman who is baking to sell to the public (because of 'Lo P'lug'), even though she is baking relatively few loaves.
(d) A private individual will need to separate only one forty-eighth - if the dough became Tamei either inadvertently or by accident ...
(e) ... but not on purpose, to prevent the sinner from gaining from his sin.
(a) R. Eliezer permits taking Chalah from a Tahor dough to cover a Tamei one (even if each one is Chayav Chalah [Tiferes Yisrael]) - in spite of the fear that the two may touch (rendering the Tahor dough, Tamei).
(b) He prescribes doing it - by placing a piece of Tamei (see Tiferes Yisrael and Tos. Yom Tov DH 've'Nosen') dough less than a k'Beitzah (from a dough from which Chalah has also not been taken [see Tos. Yom-Tov) in between the two doughs which touches them both (see Tiferes Yisrael and last answer in Mishnah 4).
(c) According to the Chachamim - the owner must separate from each dough independently.
(d) The Halachah is - like the Chachamim (see Tos. Yom-Tov).