Reference for Zevachim 4:16

וגבי גט דסתמא פסול מנלן

But surely in the case of the Get too, he also teaches: Every Get which was written not in the name of the woman, is invalid , and does not teach , 'which was not written in the name of the woman is invalid'! - Rather, it follows from what we learned: How is 'in its own name and not in its own name' meant?

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