And the 116th prohibition is that we are forbidden from leaving the fats of the Pesach sacrifice without being burning them, causing them to become invalid as nosar.1

The source of this commandment is G‑d's statement,2 "Do not allow the fat of My offering to remain overnight until morning."

The Mechilta3 says, "The verse, 'Do not allow to remain over­night,' teaches that the fats become invalid if they remain the entire night on the floor [of the Temple].4

The commandment is repeated in different words,5 "Do not allow the [Pesach] sacrifice to remain overnight until morning."