For the source text click/tap here: Gittin 82
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If someone divorces his wife and says, “You are permitted to any man besides So-and-so,” Rabbi Eliezer permits this.
The Chachamim forbid it. What should the person do? He should take the Get back, given to her anew, and merely say, “You are permitted to any man.” If the above condition was written in the Get itself, even if it was later erased, the Get is invalid.
We continue our exploration of conditional divorces.