3,420. Fruit Designated for Shabbos

Hilchos Maaser 5:22

Let’s say that a fig tree was designated for one to eat its fruits on Shabbos. If someone gathered a basket of these figs, they may not be eaten until they are tithed. This is because the figs were designated for Shabbos and Shabbos effects the obligation to tithe.

Hilchos Maaser 5:23

Let’s say that someone was eating a bunch of grapes and night fell on Friday. In such a case, he may not finish eating the grapes on Shabbos without tithing them. If he puts the grapes aside until after Shabbos, he may finish eating them then.