(Mishnah): [If one said] 'you are permitted to every man Ela (except for) my father', or he excluded his brother, her father or brother, a slave or Nochri, or anyone to whom she cannot be Mekudeshes, the Get is valid;

[If he said] 'you are permitted to every man, Ela a widow to a Kohen Gadol (she is a widow, and he did not permit her to a Kohen Gadol), or a divorcee or a Chalutzah to a Kohen Hedyot, or a Mamzeres or Nesinah to a Yisrael, or a Bas Yisrael to a Mamzer or Nasin', or anyone to whom she can be Mekudeshes, even through an Aveirah, the Get is Pasul.

The essence of a Get is 'you are permitted to every man';

R. Yehudah says, it is 'and this will be for you, from me, a Sefer of cutting, a letter of abandonment, a Get of exemption that permits you to marry any man you want.'

The essential part of a Get of freedom is 'you are a free man', or 'you are to yourself.'

(Gemara - R. Acha): [A Get is called "Sefer] Kerisus" - the Torah used the name Kerisus (cutting, to show that a remnant in a Get disqualifies) only for an Ervah (or all the more so, a stranger) that could have Kidushin in her.

(R. Mana): He must not say (i.e. write) 'v'Dein' [with a Yud, for this is like v'Din, i.e. the law obligates me to divorce you].

Question (R. Mana): [If he wrote] 'you are in your own Reshus' (is this valid for a Get? Or, does it connote only for Melachah, that she will work and feed herself?)

(R. Yosi bei R. Bun): He must say (write in a Get Shichrur) 'you are a free man', or 'you are Shel Atzmecha (of yourself. The text of our Mishnah 'l'Atzmecha' could connote that he is still a slave, just he is separated from his master.)

Support (Beraisa): He writes 'you are a free man', or 'you are Shel Atzmecha.' (We explained this like RIDVAZ.)