Kilayim, Chapter Seven, Mishnah Five
This mishnah is a continuation of yesterdays mishnah.
Rabbi Yose said: It happened that a man sowed [seed in] his vineyard in the sabbatical year, and the matter came before Rabbi Akiva, who said: a person does not prohibit [as kilayim] that which is not his own.
During the sabbatical year produce grown in ones field is considered ownerlessanyone who wants can come and take it, although he is not allowed to sell it. Therefore, Rabbi Akiva takes the rule that we learned in yesterdays mishnah, a person does not prohibit [as kilayim] that which is not his own and applies it to the case that comes before him, of one who sowed his own vineyard with seed during the sabbatical year. Rabbi Akiva rules that the seeds are not prohibited as kilayim.