Mishnayos Tamid Perek 4 Mishnah 2

When the priest flayed the hide of the daily offering after its slaughter, he would not break the animal’s leg in the typical manner of flaying an animal; rather, he punctures the leg from within each knee of the hind leg and suspends the animal by placing these holes on two hooks, in order to flay the animal’s hide. The priest began flaying from the top of the inverted animal, descending until he would reach the hide of the breast. Once he reached the breast, he severed the lamb’s head and gave it to the priest who won the right to take it up to the ramp. Next he severed the four legs below the knee and gave them to the priest who won the right to take them up to the ramp. He completed the flaying of the remaining hide from the breast down, and then the priest cut the heart and drained its blood. Next the priest severed the remaining upper parts of the forelegs and gave them to the priest who won the right to take them up to the ramp. Afterward he moved up to the remaining upper part of the right hind leg, severed it, and gave it to the priest who won the right to take it up to the ramp; and the animal’s two testicles were cut along with the right leg, leaving the animal suspended by its left hind leg. Then the priest tore open the animal’s midsection, resulting in the innards of the entire animal being exposed before him. He took the fats and placed them on the place of slaughter on the animal’s head above it, to conceal the place where it was severed while the priest would take the head to the altar. Then the priest took the innards and gave them to the priest who won the right to take them up to the ramp, in order to rinse them first. And with regard to the stomach, in which there is a significant amount of waste, the priests would rinse it in the rinsing site located in the south of the courtyard, east of the Gate of the Water, and they rinsed it as much it required. And with regard to the innards, the priests would rinse them three times at a minimum, on the marble tables that were positioned between the pillars in the slaughterhouse.