R' Yishmael stated three things before the Sages in the academy at Yavneh: [The first testimony was] concerning a beaten egg that was put on top of a vegetable of terumah that it is a connection. But if [the egg] was like a helmet, it is not a connection.  And [R' Yishmael also testified] concerning an ear [of standing grain] in the reaped section [of the field] and the tip [of this ear] reaches the standing [section]. If it is cut together with the [other] standing grain, it belongs to the owner; but if not, it belongs to the poor.  And [R' Yishmael testified] concerning a small garden that is surrounded by trellised vines, [that] if there is in [this garden] space for the grape harvester and his basket here and space for a grape harvester and his basket here, it may be sown. And if not, it may not be sown.