John Wesley on Leviticus 1:16

With its feathers - Or, with its dung or filth, contained in the crop and in the guts. On the east - Of the Tabernacle. Here the filth was cast, because this was the remotest place from the holy of holies, which was in the west - end; to teach us, that impure things and persons should not presume to approach to God, and that they should be banished from his presence. The place of the ashes - Where the ashes fell down and lay, whence they were afterwards removed without the camp.