For the source text click/tap here: Bava Batra 174
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Rav Chuna states that a person can become an arev, a guarantor, or a kablan, a third-party payer if he contracts himself to be in these roles. The rabbis attempt to differentiate between a loan guarantor and a third-party payer. A case is presented to illustrate further.
The rabbis argue about whether or not the father-in-law was a kablan or perhaps an arev. They debate whether as an arev or a kablan they were obligated for a ketuba. The Gemara debates who benefits from such a transaction and whether anyone, including the wife, is disadvantaged by this situation. They determine that the transaction would benefit everyone, and it is permitted in this case.
We explore the laws of arrives and kablan including examples from US law.