He came to the ox and he-goat which were to be burned. He tore them and removed their sacrificial parts. He put them in a plate and burned them upon the [Outer] Altar. He intertwined [the limbs of the ox and he-goat] into twists and removed them to the place of burning.  And from when do these [people] contaminate clothing? From when they go outside the wall of the Courtyard. R' Shimon says: From when the fire catches onto the greater part of [the limbs].