Mishneh Torah — Positive Mitzvot מצוות עשה, Chapter 84
The full Hebrew text of Mishneh Torah, Positive Mitzvot, Chapter 84, with English translation by Maimonides (Rambam).
להקריב כל הקרבנות בבית הבחירה, שנאמר: "ושם תעשה, כול אשר אנוכי מצווך" (דברים יב,יד).
To sacrifice all the offerings in [God's] chosen house, [i.e., the Temple,], as [Deuteronomy 12:14] states: "There, you will perform all that I command you."