כִּ֤י תִבְצֹר֙ כַּרְמְךָ֔ לֹ֥א תְעוֹלֵ֖ל אַחֲרֶ֑יךָ לַגֵּ֛ר לַיָּת֥וֹם וְלָאַלְמָנָ֖ה יִהְיֶֽה׃
Gdy będziesz obierał winnicę twoję, nie obieraj do szczętu za sobą: dla cudzoziemca, dla sieroty i wdowy niechaj zostanie.
Mishneh Torah, Gifts to the Poor
The poor have no right to take peret and olélot until the owner of the vineyard begins to harvest his grapes, as it is said, (Deut. 24:21) When [and only when] you pick the grapes of your vineyard, do not go over it again [te'olél]. And how much does he need to harvest until they [the poor] have the right [to start picking]? Three clusters, for this is enough to make a quarter of a kav.
Mishneh Torah, Gifts to the Poor
As for two vines, and so also with other trees, two which can be distinguished one from the other may be shikhecha, but three may not count as shikhecha, as it said, (Lev. 19:10, 23:22) You shall leave them for the poor and the stranger. Only if there are two, one for the poor and one for the stranger.105See Tosefta Péah 3:5.
Mishneh Torah, Positive Mitzvot
To leave for the poor, the gleanings of the vineyard (Lev. 19:10; Deut. 24:21).