Prayer: Blood from Multiple Wounds
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 840
If there are several wounds on one’s body and they are so close to each other that they are considered one wound, there is no problem in performing prayers with that blood until the time all the wounds heal. However, if the wounds are so far apart from one another that each of them is considered a separate wound, then whenever one of them heals, he must wash the blood from his body and clothing to perform prayers.