Musta'min

Mustaʾmīn or '''Musta'man''' () is a historical Islamic term for a non-Muslim foreigner temporarily residing in Muslim lands with ''aman'', or guarantee of short-term safe-conduct (''aman mu'aqqat''), affording the protected status of dhimmi (non-Muslim subjects permanently living in a Muslim-ruled land) without the payment of jizya.

Merchants, messengers, students and other groups could be given an ''aman'', while foreign envoys and emissaries were automatically protected. Provided by Wikipedia