바이크라 (레위기) 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). ולקט קצירך [NEITHER SHALT THOU COLLECT] THE GLEANINGS OF THY HARVEST — Gleanings are ears that drop from the hand of the harvester during the reaping — one or two at a time, but three do not come under the category of לקט (Mishna Peah 6:5; Sanhedrin 99a).

וּֽבְקֻצְרְכֶם֙ אֶת־קְצִ֣יר אַרְצְכֶ֔ם לֹ֧א תְכַלֶּ֛ה פְּאַ֥ת שָׂדְךָ֖ לִקְצֹ֑ר וְלֶ֥קֶט קְצִֽירְךָ֖ לֹ֥א תְלַקֵּֽט׃

And when you reap the harvest of your land, thou shalt not wholly reap the corners of thy field, neither shalt thou gather the gleaning of thy harvest.