ושמחת בכל הטוב. מִכָּאן אָמְרוּ אֵין קוֹרִין מִקְרָא בִכּוּרִים אֶלָּא בִזְמַן שִׂמְחָה, מֵעֲצֶרֶת וְעַד הֶחָג, שֶׁאָדָם מְלַקֵּט תְּבוּאָתוֹ וּפֵרוֹתָיו וְיֵינוֹ וְשַׁמְנוֹ, אֲבָל מֵהֶחָג וָאֵילָךְ מֵבִיא וְאֵינוֹ קוֹרֵא (פסחים ל"ו): ושמחת בכל הטוב AND THOU SHALT REJOICE IN EVERY GOOD THING — From this they (the Rabbis) derived the law that the recital on the occasion of bringing the first fruits is made only during the joyful period of the year — from Pentecost till the Feast of Tabernacles — when a man is gathering in his grain, his fruits, his wine and his oil; but from Tabernacles onwards until Chanucah if he brings these, he does not make the recital (Pesachim 36b).
אתה והלוי. אַף הַלֵּוִי חַיָּב בְּבִכּוּרִים אִם נָטְעוּ בְּתוֹךְ עָרֵיהֶם: אתה והלוי THOU AND THE LEVITE — the Levites are also bound to bring the first fruits to the priest if they planted anything in the fields attached to their cities.
והגר אשר בקרבך. מֵבִיא וְאֵינוֹ קוֹרֵא, שֶׁאֵינוֹ יָכוֹל לוֹמַר לַאֲבוֹתֵינוּ (תלמוד ירושלמי מ"ש פ"ה ה"ה): והגר אשר בקרבך AND THE STRANGER THAT IS AMONG YOU — he, too, brings the first fruits to the priest but does not make the recital, for he cannot truly say, as is prescribed, “[I profess this day … that I have come into the land which the Lord sware] unto our fathers” (v. 3) since his fathers were not Israelites (cf. Sifrei Devarim 301:37; Mishnah Bikkurim 1:4; Talmud Yerushalmi Maaser Sheni 5:5).