מראשית. וְלֹא כָל רֵאשִׁית, שֶׁאֵין כָּל הַפֵּרוֹת חַיָּבִים בְּבִכּוּרִים אֶלָּא שִׁבְעַת הַמִּינִין בִּלְבַד, נֶאֱמַר כָּאן "אֶרֶץ" וְנֶאֱמַר לְהַלָּן (דברים ח') "אֶרֶץ חִטָּה וּשְׂעֹרָה וְגוֹ'", מַה לְּהַלָּן מִשִׁבְעַת הַמִּינִים שֶׁנִּשְׁתַּבְּחָה בָהֶן אֶרֶץ יִשְׂרָאֵל, אַף כָּאן שֶׁבַח אֶרֶץ יִשְׂרָאֵל שֶׁהֵן שִׁבְעַת מִינִין (ספרי; מנחות פ"ד): מראשית [THEN THOU SHALT TAKE] OF THE FIRST [OF ALL THE FRUIT OF THE GROUND] — of the first fruits, but not all the first fruits, for not all fruits are subject to the duty of bringing to the Temple their first-fruits, only the seven chief kinds of products of Palestine alone, for there is mentioned here ארץ, “the land” (אשר תביא מארצך) and it states there (Deuteronomy 8:8) “a land (ארץ) of wheat, and barley, etc.”, (thus suggesting an analogy — that the fruits of the land referred to here are those enumerated there). What is it that Scripture is speaking of there? Of the seven products through which the land of Israel is distinguished! So, too, here it speaks only of the distinguished products of the land of Israel which are seven species only (Sifrei Devarim 297:4; Menachot 84b).
זית שמן. זַיִת אֱגוֹרִי, שֶׁשַּׁמְנוֹ אָגוּר בְּתוֹכוֹ (ספרי; ברכות ל"ט): זית שמן mentioned as one of these distinguished products is the Agari olive, in which the oil is gathered in one place.
ודבש. הוּא דְּבַשׁ תְּמָרִים (ספרי): ודבש HONEY is honey of dates (not of bees).
מראשית. אָדָם יוֹרֵד לְתוֹךְ שָׂדֵהוּ וְרוֹאֶה תְאֵנָה שֶׁבִּכְּרָה, כוֹרֵךְ עָלֶיהָ גְּמִי לְסִימָן וְאוֹמֵר "הֲרֵי זוֹ בִכּוּרִים" (ספרי; בכורים ג'): מראשית OF ITS FIRST FRUITS — but not all the first fruits (not even of the seven species mentioned above) but when a man goes into his field and sees for the first time that year a fig that has ripened he binds a piece of straw round it as an indication and says “Lo, this is בכורים" (and it suffices) (Sifrei Devarim 297:7; Mishnah Bikkurim 3:1).