The key point is the proviso that Murray notes: insofar as men need to work to survive.
The kingdom takes them in on the proviso that they stay out of politics.
When contemplating how to evaluate Barack Obama's first 100 days, it's important to keep in mind the proviso: Compared to what?
mid-15c., from Medieval Latin proviso (quod) "provided (that)," phrase at the beginning of clauses in legal documents (mid-14c.), from Latin proviso "it being provided," ablative neuter of provisus, past participle of providere (see provide). Related: Provisory.