Bikkurim 2:4 - 2:5

נקנים במחובר לקרקע – As it is written (Numbers 18:13): “The first fruits of everything in their land [that they bring to the LORD, shall be yours; everyone of your household who is clean may eat them].” At the time when they are attached [to the ground] in their land they are “First Fruits,” and such is taught in the Mishnah (Chapter 3, Mishnah 1) further on, “A person goes down into his field, etc. and ties it with bulrushes/reed-grass and says: ‘Behold these are First Fruits’.”

ועושה אדם כל שדהו בכורים – as it is written (Numbers 18:13): “The first fruits of everything [in their land]…”

וטעונים קרבן – It is stated with regard to First Fruits: “joy” [as written in Deuteronomy 26:11): “And you shall enjoy (literally, “you shall rejoice”),[together with the Levite and the stranger in your midst…].” And it states further on (Deuteronomy 27:7): “And you shall sacrifice there offerings of well-being and eat them, rejoicing before the LORD your God.” Just as there (Deuteronomy 27:7), [it speaks about] offerings of well-being, so too here (Deuteronomy 26:11).

ושיר – It is stated here (Deuteronomy 26:11): “You shall enjoy…all the bounty” and it is stated further on (Ezekiel 33:32): “[To them you are just] a singer of bawdy songs, who has a sweet voice and plays skillfully; [they hear your words , but will not obey them].”

ותנופה – It is written here (Deuteronomy 26:4): “The priest shall take the basket from your hand;” and it is written there (Leviticus 7:30): “His own hands shall present the LORD’s offerings by fire. [He shall present the fat with the breast, the breast to be elevated as an elevation offering before the LORD].” Just as there is an elevation offering, so also here an elevation offering.

ולינה – It will stay over in Jerusalem the entire night after the day that he brought the First Fruits, as it is written (Deuteronomy 16:7): “[You shall cook and eat it at the place that the LORD your God will choose;] and in the morning you may start back on your journey home.” Therefore all “starting back” that you do only take place in the morning.

נטלת מן הטהור על הטמא – For behold, the heave-offering/sacred donations [for a Kohen] are not taken from that which is pure/clean from that which is unclean/impure which is the reason that we require that which is close-by, and we are concerned that perhaps they are not close-by, for there is doubt that perhaps the pure came in contact with the impure. And this is the reason that we say here that the heave-offering/sacred donations is not taken from a mass which is not in close neighborhood of those products which are to be redeemed.

ויש לה שיעור כתרומה – For the Sages gave a [minimum] measure for the heave-offering/Terumah – two out of one-hundred.