What are the guidelines for dealing with the People of the Book who work in the lands of Islam?

Question:
A questioner asks: How should one deal with the disbelievers among the Jews and the Christians who work in the lands of Islam?

Answer:
Dealing with them in trade and dealing with them in matters of industry, in permissible matters, is fine.
Dealing with them in buying and selling, dealing with them in that they perform construction work or engineering work or manufacturing work, this is among the mutual interests of this world, and there is no harm in that, except if Muslims are found who can perform this work, for the Muslim is preferred over the disbeliever. But if no Muslims are found and the disbelievers are the only ones who are skilled in this work, and it is a worldly matter, then there is no harm in contracting with them for these works. However, bringing them into the lands of the Muslims, the two Holy Sanctuaries, and the Arabian Peninsula is a different matter. The Messenger (peace and blessings be upon him) ordered the expulsion of the Jews and the Christians from the Arabian Peninsula. So in any case, it is obligatory to avoid employing disbelievers in the lands of the Peninsula and in the lands of the Arabs, and Muslim workers should be brought in whenever that is possible.