Mishneh Torah — Positive Mitzvot מצוות עשה, Chapter 132
The full Hebrew text of Mishneh Torah, Positive Mitzvot, Chapter 132, with English translation by Maimonides (Rambam).
לקרות על הביכורים, שנאמר: "וענית ואמרת לפני ה' אלוהיך" (דברים כו,ה).
To read the statement [acknowledging thanks] for the first fruits, as [Deuteronomy 26:5] states: "And you shall respond and say before God, your Lord:...."