Bava Batra 165A

אלא אבק לשון הרע.

The Talmud answers: Rather, Rav was referring to uttering a hint, i.e., words with a bare trace, of lashon hara.

אמר רב יהודה אמר רב: רוב בגזל, ומיעוט בעריות, והכל בלשון הרע. בלשון הרע סלקא דעתך?! אלא אבק לשון הרע.

Rav Yehuda says that Rav says: The majority of people succumb to sin with regard to robbery, and a minority of people succumb to sin with regard to sexual matters, and everyone succumbs to sin with regard to lashon hara. The Talmud asks: Can it enter your mind that all people sin with regard to lashon hara? The Talmud answers: Rather, Rav was referring to uttering a hint of lashon hara.

רבן שמעון בן גמליאל אומר: הכל כמנהג המדינה. ותנא קמא לית ליה מנהג מדינה?

§ The Mishnah teaches, with regard to documents, that Rabban Shimon ben Gamliel says: Everything is in accordance with regional custom. The Talmud wonders: And does the first tanna not accept that one should follow the regional custom? It is not reasonable that he would take issue with such a basic concept.

אמר רב אשי: באתרא דנהיגי פשוט, ואמר ליה: ״עביד לי פשוט״, ואזל עבד ליה מקושר ⁠– קפידא. נהיגי מקושר, ואמר ליה: ״עביד לי מקושר״, ואזל עבד ליה פשוט ⁠– קפידא.

Rav Ashi said in explanation: In a place where the custom is to write an ordinary document, and one said to a scribe: Make an ordinary document for me, and the scribe went and made a tied document for him, it is assumed that he was particular about wanting an ordinary document. Similarly, in a place where the custom is to write a tied document, and one said to a scribe: Make a tied document for me, and the scribe went and made an ordinary document for him, it is assumed that he was particular about wanting a tied document. In both of these cases, the document is considered to have been written without the consent of the one who requested it. If it is a bill of divorce it may not be used, as a bill of divorce must be written with the knowledge and consent of the husband.