Negative commandment · Lo Ta’aseh #117 of 613
Not to allow the meat of the Paschal sacrifice to remain [overnight]
שלא להותיר מבשר הפסח
The verse · Shemot 12:10
וְלֹא־תוֹתִירוּ מִמֶּנּוּ עַד־בֹּקֶר וְהַנֹּתָר מִמֶּנּוּ עַד־בֹּקֶר בָּאֵשׁ תִּשְׂרֹפוּ
“And you shall let nothing of it remain until the morning; and that which remains of it until the morning you shall burn with fire.”
The Rambam’s words
Not to allow the meat of the Paschal sacrifice to remain [overnight], as [Exodus 12:10] states: "Do not leave over any of it until the morning."
שלא להותיר מבשר הפסח, שנאמר "ולא תותירו ממנו, עד בוקר" (שמות יב,י).
Why · Sefer HaChinuch #8
To not leave from the meat of the Pesach sacrifice
“From the roots of this commandment are so that the Jews will remember forever the great miracles that G-d performed for them during the exodus from Egypt.”
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