וּֽבְקֻצְרְכֶ֞ם אֶת־קְצִ֣יר אַרְצְכֶ֗ם לֹֽא־תְכַלֶּ֞ה פְּאַ֤ת שָֽׂדְךָ֙ בְּקֻצְרֶ֔ךָ וְלֶ֥קֶט קְצִירְךָ֖ לֹ֣א תְלַקֵּ֑ט לֶֽעָנִ֤י וְלַגֵּר֙ תַּעֲזֹ֣ב אֹתָ֔ם אֲנִ֖י יְהוָ֥ה אֱלֹהֵיכֶֽם׃ (ס)
A gdy zżynać będziecie użątek ziemi waszej, do skrajów pola twojego nie wyżynaj, a pokłosia żniwa twego nie podbieraj, ubogiemu i cudzoziemcowi zostaw je: Jam Wiekuisty, Bóg wasz!"
Mishnah Gittin
These were the rules they laid down because of the ways of peace: A priest is called up first to read the Torah and after him a Levite and then an Israelite, because of the ways of peace. An “eruv” is placed in the room where it has always been placed, because of the ways of peace. The cistern which is nearest to the channel is filled first, because of the ways of peace. [Taking of] beasts, birds and fishes from traps [set by others] is robbery, because of the ways of peace. Rabbi Yose says that it is actual robbery. [Taking away] anything found by a deaf-mute, an idiot or a minor is robbery, because of the ways of peace. Rabbi Yose says that it is actual robbery. If a poor man strikes [down olives] on top of an olive tree, [taking the fruit] that is beneath him is robbery. Rabbi Yose says that it is actual robbery. Poor Gentiles are not prevented from gathering gleanings, forgotten sheaves, and the corners of the field, because of the ways of peace.
Mishnah Niddah
Whatever is subject to peah is also subject to tithes. But there is [produce] which is subject to tithes and is not subject to peah.