When to Circumcise Trees - Mishnah Orlah

(2) At the time our ancestors came into the land, if they found a tree already planted it was exempt [from the laws of orlah]. If they planted a tree, even though they had not yet conquered the land, it was liable [to orlah].

(23) When you enter the land and plant any tree for food, you shall regard its fruit as forbidden. Three years it shall be forbidden for you, not to be eaten. (24) In the fourth year all its fruit shall be set aside for jubilation before the Eternal; (25) and only in the fifth year may you use its fruit—that its yield to you may be increased: I the Eternal am your God.

(11) You shall circumcise the flesh of your foreskin, and that shall be the sign of the covenant between Me and you.

(30) Moses appealed to the Eternal, saying, “See, I am of occluded speech; how then should Pharaoh heed me!”

(9) Doubtful orlah: in the land of Israel is prohibited, in Syria is permitted...

New [produce] is prohibited by the Torah in all places. And orlah is a halachah. And kilayim is an enactment of the scribes.

(10) Speak to the Israelite people and say to them: When you enter the land that I am giving to you and you reap its harvest, you shall bring the first sheaf of your harvest to the priest. (11) He shall elevate the sheaf before the Eternal for acceptance in your behalf; the priest shall elevate it on the day after the sabbath. (12) On the day that you elevate the sheaf, you shall offer as a burnt offering to the Eternal a lamb of the first year without blemish. (13) The meal offering with it shall be two-tenths of a measure of choice flour with oil mixed in, an offering by fire of pleasing odor to the Eternal; and the libation with it shall be of wine, a quarter of a hin. (14) Until that very day, until you have brought the offering of your God, you shall eat no bread or parched grain or fresh ears; it is a law for all time throughout the ages in all your settlements.

The sharp Sages of Pumbedita said: The prohibition of orlah does not apply at all outside of the Land of Israel.

Rav Yehuda sent a question to Rabbi Yoḥanan concerning the halakha with regard to orlah outside of Eretz Yisrael. Rabbi Yoḥanan sent him the following response: Conceal the law that produce whose orlah status is uncertain is permitted; and destroy produce whose orlah status is certain...

And [he added] whoever says that there is no prohibition of orlah outside of the Land of Israel will have neither a child nor a grandchild “who will carry the line of holding land in the congregation of the Eternal.” (Micah 2:5).