Sukkah 24B

הרי עשויה בידי אדם.

this partition was established by a person and is therefore fit.

אמר מר. משום רבי יוסי הגלילי אמרו: אף אין כותבין עליו גיטי נשים. מאי טעמיה דרבי יוסי הגלילי? דתניא: ״ספר״, אין לי אלא ספר. מנין לרבות כל דבר ⁠— תלמוד לומר: ״וכתב לה״ מכל מקום.

§ The Master said in the baraita that in the name of R' Yosei HaGelili they said: Nor may one write bills of divorce on it. The Talmud asks: What is the rationale for the opinion of R' Yosei HaGelili? It is as it is taught in a baraita with regard to the verse: “When a man takes a wife, and marries her, and it comes to pass if she finds no favor in his eyes, because he has found some unseemly thing in her; that he write her a scroll [sefer] of severance and give it in her hand, and send her out of his house” (Deuteronomy 24:1); from the word scroll, I have derived only that a scroll is fit. From where do I derive to include all objects as fit materials upon which a bill of divorce may be written? The verse states: “That he write her,” in any case, i.e., any surface upon which the formula can be written.

אם כן, מה תלמוד לומר ״ספר״? לומר לך: מה ספר דבר שאין בו רוח חיים ואינו אוכל, אף כל דבר שאין בו רוח חיים ואינו אוכל.

If so, what is the meaning of that which the verse states: Scroll? It is to tell you that a bill of divorce must be written on a surface like a scroll: Just as a scroll is neither alive nor is it food, so too, a bill of divorce may be written on any object that is neither alive nor food. That is why R' Yosei HaGelili invalidates a bill of divorce written on a living being.