Today is the 9th of Adar, and according to the Shulchan Aruch (Orech Chaim 580) it is a fast day for tzadikim. The reason for the fast is that on this day Beis Hillel and Beis Shammai argued! בט’ נחלקו בית שמאי ובית הלל:“On the ninth [of Adar] Beis Shammai and Beis Hillel argued” None… Read more