Referência sobre Peah 8:15

ואכלו ושבעו AND THEY SHALL EAT AND BE SATISFIED — Give them sufficient to satisfy them. From here they (the Rabbis) derived the law: one must give the poor in the barn no less than half a kab of wheat or a kab of barley (Sifrei Devarim 110:3). As for you, go up to Jerusalem with the tithe (i.e. מעשר שני) of the first and the second years which thou hast delayed, and make the confession there: “I have removed the hallowed things from the house” — as it is stated in the section beginning with the words כי תכלה לעשר (Deuteronomy 26:12).