And these are the ends of rows: [If] two workers started from the middle of the row, one facing north and one facing south, and they forgot [sheaves] in front of them and behind them —- that which is in front of them is deemed shich'chah and that which is behind them is not deemed shich'chah. [If] a lone worker started from the end of a row and forgot [sheaves] in front of him and behind him —- what is in front of him is not shich'chah, but what is behind him is shich'chah because it is governed by [the prohibition] (Deut. 24:19): Do not turn back.  This is the rule: Whatever is governed by “do not turn back” is shich'chah; whatever is not governed by “do not turn back” is not shich'chah.

Two sheaves are shich'chah, but three are not shich'chah. Two heaps of olives or carobs are shich'chah, but three are not shich'chah. Two stalks of flax are shich'chah, but three are not shich'chah. Two grapes are peret, but three are not peret. Two ears are leket; three are not leket. These [rulings] are in accordance with the opinion of Beis Hillel. But concerning all of them Beis Shammai say: Three [belong] to the poor and four [belong] to the owner.