Negative commandment · Lo Ta’aseh #92 of 613
Not to slaughter animals with disqualifying physical blemishes as sacrifices
שלא לשחוט בעלי מומין לשם קרבן
The verse · Vayikra 22:22
עַוֶּרֶת אוֹ שָׁבוּר אוֹ־חָרוּץ אוֹ־יַבֶּלֶת אוֹ גָרָב אוֹ יַלֶּפֶת לֹא־תַקְרִיבוּ אֵלֶּה לַה׳ וְאִשֶּׁה לֹא־תִתְּנוּ מֵהֶם עַל־הַמִּזְבֵּחַ לַה׳
“Blind, or broken, or maimed, or having a growth, or scurvy, or scabbed, you shall not offer these to the Lord, nor make an offering by fire of them upon the altar to the Lord.”
The Rambam’s words
Not to slaughter animals with disqualifying physical blemishes as sacrifices, as [Leviticus 22:22] states: "Do not sacrifice these to G-d."
שלא לשחוט בעלי מומין לשם קרבן, שנאמר "לא תקריבו אלה, לה'" (ויקרא כב,כב).
Who & when
“However we should not count this prohibition with those that are practiced today; as due to our iniquities, we do not have an altar to slaughter the sacrifices there.”
Where in the Mishneh Torah
Hilchot Things Forbidden on the Altar הלכות איסורי המזבח