[If] someone says to his fellow, “Take this issar, and give me five figs for it,” [the buyer] may not eat [the figs] until he separates [their] tithes. [These are] the words of R' Meir. R' Yehudah says: [If] he eats one at a time, [he is] exempt [from tithing]; but if he combines [them], he is obligated [to tithe them].  R' Yehudah said: There was an incident con-cerning a rose garden which was in Jerusalem, [whose] figs were being sold for three or four per issar, and never were terumah and tithes ever separated from its [figs].