Positive commandment · Mitzvat Aseh #84 of 613
To sacrifice all the offerings in [G-d's] chosen house, [i.e., the Temple,]
להקריב כל הקרבנות בבית הבחירה
The verse · Devarim 12:14
כִּי אִם־בַּמָּקוֹם אֲשֶׁר־יִבְחַר ה׳ בְּאַחַד שְׁבָטֶיךָ שָׁם תַּעֲלֶה עֹלֹתֶיךָ וְשָׁם תַּעֲשֶׂה כֹּל אֲשֶׁר אָנֹכִי מְצַוֶּךָּ
“but only in the place which the Lord shall choose in one of thy tribes, there thou shalt offer thy burnt offerings, and there thou shalt do all that I command thee.”
The Rambam’s words
To sacrifice all the offerings in [G-d's] chosen house, [i.e., the Temple,], as [Deuteronomy 12:14] states: "There, you will perform all that I command you."
להקריב כל הקרבנות בבית הבחירה, שנאמר: "ושם תעשה, כול אשר אנוכי מצווך" (דברים יב,יד).
Why · Sefer HaChinuch #440
Sacrifice all the sacrifices in the Choice House
“It is from the roots of the commandment that in there being a specific place in the world for sacrifices and it having constancy of [being the place] from where one seeks G-d, the place becomes sanctified, the will of G-d rests upon it and the emanation of His blessing always emanates upon it.”
Who & when
“And this commandment is practiced by males and females in every place and at all times.”
Where in the Mishneh Torah
Hilchot Sacrificial Procedure הלכות מעשה הקרבנות