Study Bava Batra folio 172B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
Rav Huna said: The term: From you, in the document does not identify anyone in particular, and can mean even: From the Exilarch, or even: From King Shapur.
Rav Ḥisda said to Rabba: Go out and investigate this matter, as tonight Rav Huna will ask this question of you.
Rabba went out, examined the matter, and discovered a relevant source. As it is taught in a baraita: Concerning a bill of divorce in which there are the signatures of witnesses on the document but there is no date written on it, Abba Shaul says that if it is written in it: I divorced her today, it
Rabba concludes: Apparently, the term: Today, indicates that day on which the bill of divorce emerges in the presence of the court. Here too, the term: From you, in a promissory note indicates that man from whose possession it emerges.
Abaye said to him: But this is not a valid proof, as perhaps Abba Shaul holds in accordance with the opinion of R' Eliezer, who says that witnesses of the transmission of the bill of divorce effect the divorce. But here, let there be a concern for the possibility of the promissory note falling from