Menahot 65: How a Boethusian Heretic Counts the Omer

A new mishnah! On the ceremony of the process of the omer - how they wove the stalks of barley together while they were still attached to the ground, which made them easier to harvest. And the people who lived in the area came together to celebrate. And the ceremony continued... with underlying goals of taking a polemical stance against the Boethusians. [Who's Who: The Boethusians]. Plus, Megillat Ta'anit, and the days when it was not permitted to fast, and some when it wasn't permitted to eulogize either. Where the day of the starting counting the omer is highly disputed.