Tosefta do Maaserot 3:13

One who brings in figs from the field to eat them in a courtyard that is exempt from tithes (see Maasr. 3:5) -- [if] he forgot [to eat them in the courtyard] and he [instead] brought them inside his house, he may take them back out to the courtyard and eat casually from them.

One who brings in figs from the field to eat them in a courtyard that is exempt from tithes (see Maasr. 3:5) -- [if] he forgot [to eat them in the courtyard] and he [instead] brought them inside his house, he may take them back out to the courtyard and eat casually from them.

One who brings in figs from the field to eat them in a courtyard that is exempt from tithes -- [if] he forgot and took them up to the top of the roof, even [if it is the roof] inside his house, he may eat from them casually. One who brings in figs from the field to them on top of his roof - [if] he forgot and brought them into his friend's courtyard -- he may not eat them until he has tithed. Rabbi Yosei bar Rabbi Yehuda says, he may take them on top of the roof and eat them [casually].

One who found sheaves in a private domain -- they are forbidden under the laws of theft and they are liable in tithes. In a public domain -- they are permitted under the laws of theft and exempt from tithes. And the alum plants -- whether in a private domain or in a public domain -- are forbidden under the laws of theft and liable in tithes.

[A worker who] found produce that had been stacked (see Peah 1:6), he is forbidden from [removing some of it and] making it into a pile [of his own] under the laws of theft. [But if he found] scattered [produce], that is permitted under the laws of theft. In either case, he may separate Terumah and tithes on behalf of produce belonging to the homeowner and need not be concerned. [If] he found a harvesting basket, it is forbidden [to take produce out of the basket] under the laws of theft, and it is liable in tithes. How does he do it? He converts it to its monetary value [and eats it]. (See Yer. Maasr. III.1.10.)

A synagogue or a house of study -- if it has living quarters within it, one may not eat within them casually, and if not (i.e., if it has no living quarters), he may eat within them casually. The אוריות and the storehouses that are in the field, they are made to bring [food inside, and thus] one may eat in them casually. [However,] one may not eat casually inside living quarters. Rabbi Nechemiah says, a regularly weeded courtyard ("חצר נֶעֱדֶרֶת", see Yer. Maasr. III.3.8 and GR"A) is like a [vegetable] garden and one may eat there casually.

A tree that part of it is planted in the Land [of Israel] and part of it is planted outside of the Land, since part of it is planted inside the Land, it is [treated] as though all of is planted in the Land, the words of Rebbi. Rabban Shimon ben Gamaliel says, the side (הצד not חצר, see Yer. Orlah I.1.17) planted in the Land of Israel -- behold, it[s produce] is [treated] like [produce grown in] the Land of Israel; and the side planted outside the Land -- behold, it[s produce] is [treated] like [produce grown] outside of the Land.