Comentário sobre Levítico 19:9

לא תכלה פאת שדך THOU SHALT NOT WHOLLY REAP THE CORNER OF THY FIELD — This means that one must leave פאה (an uncut portion) at the extremity of one's field (cf. Sifra, Kedoshim, Chapter 1 9; Mishna Peah 1:2; Shabbat 23a).

ובקצרכם...לעני ולגר תעזוב אותם, The Torah now turns to how we can emulate G’d’s attributes in [practice after having accepted that it is our purpose on earth to emulate G’d’s characteristics to the extent that He has revealed them to us. We are to perform acts of charity and righteousness. Part of such acts of charity are the providing for the underprivileged out of the bounty G’d has seen fit to grant us. The specific items known as leket, shikchah, and peyah are examples of such demonstrations of our generosity towards the poor. אני ה' אלוקיכם, this recognition of G’d as our G’d is demonstrated by our meticulously fulfilling these commandments relating to the time when we gather in our harvest. Before we even give tithes of the completed harvest which has been brought into the barn we already allow for the poor to help themselves to what other, gentile farmers, might consider the product of their own hard earned labour.

ובקצרכם את קציר ארצכם, "And when you reap the harvest of your land, etc." The Torah commenced this verse by speaking in the plural, whereas it concluded by addressing an individual i.e. לא תכלה פאת שדך, "you (sing.) must not reap the corner of your field." The Torah may have wanted to dispel the faulty notion that when the amount of gleanings, etc. does not amount to anywhere near enough to provide something meaningful for the poor that the law does not apply. We find an example of such thinking in Kings II 4,43 where Gechazi, Elisha's servant, questioned the use of sharing out twenty loaves amongst over one hundred of Elisha's followers. The Torah therefore addresses each farmer individually to tell him that even though his individual contribution is minimal he must abide by this legislation. The Torah uses the singular for each one of the types of gifts for the poor listed in our verse.