The Punishment of Islamic Law

One of the punishments of Islamic law for certain crimes is called at a rehab at a rehab means leave your land and go somewhere else if you're from let's say the hijas go live in the nudged or someplace. The Sahaba had to self inflict this punishment when they went to Abyssinia as part of their initiation into Islam. When they come back, they cannot just expect the same protection so each one of them has to find a new sponsor like what's going to be my entry visa to get into Mecca.