The Bavli’s editors noted the conclusion of some tractates with an edifying message. For tractates Bava Metzia and Avodah Zarah, they placed stories about Sasanian king Shapur I. In this way, they connected their rabbinic milieu to the Sasanian world in which they operated, and imagined Sasanian authority and approval of rabbinic law.
The rabbinic rules of restoring lost property (השבת אבידה) include a requirement to announce the finds that possess identifying marks – סימנים. This post-biblical innovation is described in a variety of ways that highlight the manner in which the rabbis reworked and reinterpreted their traditions.