Negative commandment · Lo Ta’aseh #121 of 613
Not to break any of the bones of the Paschal sacrifice
שלא לשבור עצם בפסח
The verse · Shemot 12:46
בְּבַיִת אֶחָד יֵאָכֵל לֹא־תוֹצִיא מִן־הַבַּיִת מִן־הַבָּשָׂר חוּצָה וְעֶצֶם לֹא תִשְׁבְּרוּ־בוֹ
“In one house shall it be eaten: thou shalt not take any of the meat outside, out of the house; neither shall you break a bone of it.”
The Rambam’s words
Not to break any of the bones of the Paschal sacrifice, as [Exodus 12:46] states: "Neither shall you break a bone of it."
שלא לשבור עצם בפסח, שנאמר (שמות יב, מו): "ועצם לא תשברו בו".
Why · Sefer HaChinuch #16
To not break a bone from the Pesach sacrifice
“From the roots of the commandment is to remember the miracles of Egypt, as we have written in the other [related commandments]. And this is also a trunk from the root mentioned: For it is not honorable for the sons of kings and the advisers of the land to drag the bones and break them like dogs.”
Who & when
“And [it] is practiced by males and females at the time of the [Temple].”
Where in the Mishneh Torah
Hilchot Paschal Offering הלכות קרבן פסח