https://outorah.org/p/48448
Asara Batlanim and Safek Mukafin - part 2 - Shiurim on Rambam - OU Torah
Mar 13, 2019 - The city of Tzor didn't know if they were walled from the days of Yehoshua so they read the Megillah on both days witha bracha. Was that the proper course of a
shiurim on rambam