remaining blood gets poured onto the altar
that drains into the water
that washes into the river
that gets sold to nourish the earth.
- it is still blood from the temple
don't get it on your clothes.
(discussion about what to do with the remainder blood, and which part of the altar is it poured on. also described is that this blood would mix with water and drain out of the temple and mix with water. this was sold as fertiliser. The sale would redeem the blood and thus not be suspect of misusing hekdesh - something that belongs to the temple. although it is unclear if the blood was considered property of the temple or belonging to all the people. a detail about the sprinkling is that it was done in a way to prevent blood going on the priest's garments)