Related על דמאי 1:1

These are the leniencies with Demai (uncertainly tithed produce): wild figs, the fruit of the lotus, and azerole are presumed exempt in every place (cf. Dem. 1:1). But if they were watched over, they are liable [as Demai]. If [they happen to also be watched over by virtue of] someone protecting his field (i.e, where they happen to have grown), they are exempt. Rabbi Yosei says, wild figs from Tzipporin are liable [as Demai] because they are watched over. Rabbi Yosei son of Rabbi Yehudah says, unripe dates that are sold along with [ripe] dates are liable. And the sages say, until they begin to ripen [lit. "to leaven"] they are exempt, [but] from [the time that] they begin to ripen they are liable.