This law applies only to Jews, of course; a Canaanite slave like Tavi was not obligated to follow the rules of Sukkot. Yet Tavi was learned enough in the Torah to know the rules he was not supposed to follow—Rabban Gamliel even calls him a “Torah scholar,” a talmid hakham—so he demonstratively slept under a bed in the sukkah. In doing so Tavi taught two laws by example: that a Jew cannot sleep under a bed in the sukkah, and that a Canaanite is not obligated to follow all the mitzvot binding on a Jew. There is a fascinating kind of ambiguity in this gesture of Tavi’s. He was simultaneously dramatizing that he was just like the rabbis, in his knowledge of law, and totally unlike them, because the law was not his. If you had to choose one person from the Talmud to bring back to life and interview, Tavi might not be the obvious choice, but he could be the most revealing witness to how the rabbis actually lived their Judaism.More on Merkavah Mysticism and Hekhalot literature here and links (shameless self-promotion alert).
Earlier Daf Yomi columns are noted here and links.