And when you reap: this is already written in Parshat Kedoshim. And there the commentaries came (to interpret) why this matter is doubled (see there). But there is still the question of teh reason that this is written in the middle of the laws of the Festivals? And Rabbi Avordimas said that one of the intentions and purposes of the Festivals and holidays was to sustain the priests of Hashem and the poor - that both of these are dependant on the table of the Almighty to be sustained, like it always says, "you and the Levi and the stranger and the orphan etc". He said that also after the Festival it is commanded upon you to sustain the poor from the gifts of the harvest. And this is one of the benefits of the sacrifices of Hashem on the Festival - that from them the priests would be sustained, as it says, "the fire-offerings of Hashem and His inheritance they will eat" - and this is customary all year and even when the Beit HaMikdash is destroyed. And one who does not take out the portion of the poor is compared as if he refrains from bringing his sacrifices in the Chosen House.