Positive commandment · Mitzvat Aseh #121 of 613
To leave leket
להניח לקט
The verse · Vayikra 19:10
וְכַרְמְךָ לֹא תְעוֹלֵל וּפֶרֶט כַּרְמְךָ לֹא תְלַקֵּט לֶעָנִי וְלַגֵּר תַּעֲזֹב אֹתָם אֲנִי ה׳ אֱלֹהֵיכֶם
“And thou shalt not glean thy vineyard, neither shalt thou gather the single grapes of thy vineyard; thou shalt leave them for the poor and stranger: I am the Lord your God.”
The Rambam’s words
To leave leket.
להניח לקט.
Why · Sefer HaChinuch #218
To leave the gleanings in the field
“It is from the roots of the commandment that G-d, blessed be He, wanted that His people that He chose be crowned with every good and dear trait and that they would have a blessed soul and a generous spirit.”
Who & when
“And with regards to in which place it is practiced and who is obligated about it and the punishment of one who transgresses it, it is all like the corner.”
Where in the Mishneh Torah
Hilchot Gifts to the Poor הלכות מתנות עניים