Mishnayos Peah Perek 6 Mishnah 5

Two sheaves [left lying together] are “forgotten,” but three are not “forgotten.” Two bundles of olives or carobs are “forgotten” but three are not “forgotten.” Two flax-stalks are “forgotten”, but three are not “forgotten”. Two grapes are considered “grape gleanings,” but three are not “grape gleanings.” Two ears of grain are deemed “gleanings,” but three are not gleanings.” All these [rulings] are according to Bet Hillel. And concerning them all Bet Shammai says that three [that are left] belong to the poor, and four belong to the owner.

שְׁנֵי עֳמָרִים, שִׁכְחָה, וּשְׁלשָׁה אֵינָן שִׁכְחָה. שְׁנֵי צִבּוּרֵי זֵיתִים וְחָרוּבִין, שִׁכְחָה, וּשְׁלשָׁה אֵינָן שִׁכְחָה. שְׁנֵי הוּצְנֵי פִשְׁתָּן, שִׁכְחָה, וּשְׁלשָׁה אֵינָן שִׁכְחָה. שְׁנֵי גַרְגְּרִים, פֶּרֶט, וּשְׁלשָׁה אֵינָן פֶּרֶט. שְׁנֵי שִׁבֳּלִים, לֶקֶט, וּשְׁלֹשָׁה אֵינָן לֶקֶט. אֵלּוּ כְּדִבְרֵי בֵית הִלֵּל. וְעַל כֻּלָּן בֵּית שַׁמַּאי אוֹמְרִים, שְׁלשָׁה, לָעֲנִיִּים, וְאַרְבָּעָה, לְבַעַל הַבָּיִת: