Reply To: YWN Coffee Room Nightly D’Var Torah

That is a gemara in megilla 14a. There are other explanations there as well. Interesting that the Rambam says that the reading of the megilla is the hallel, like another explanation in the gemara. Even more interesting is that based on that, the Meiri says that if one does not have a megilla he should recite hallel. We do not pasken like that.