The 188th prohibition is that we are forbidden from eating the flesh of a shor ha'nis'kal,1 even if it was slaughtered in a kosher manner before being stoned to death.2 Since the final judgment was issued, it is prohibited even if it was slaughtered with a valid shechita.

The source of this prohibition is G‑d's statement,3 "Do not eat its flesh."

In the words of the Mechilta, "If an ox was on its way to be stoned to death and its owners slaughtered it first, its flesh may not be eaten. For this case, the Torah said, 'Do not eat its flesh.' "

One who eats a kezayis of its flesh is punished by lashes.