It is permissible to employ a Jew—that is, to take him as a servant—on condition that one feels safe from his treachery, for Jews are generally characterized by guile, deception, and betrayal, seldom honoring a covenant or safeguarding a trust. If one is confident of his reliability, however, there is no objection to hiring him.

It is permissible to visit a sick Jew, as the Prophet ﷺ visited this boy. It may be, though, that the Prophet’s visit was prompted by the boy’s past service and thus constituted a gesture of reciprocation; on that understanding, the ruling would not extend to every Jew. It is also possible that the Messenger ﷺ visited him in order to invite him to Islam. Hence, visiting a sick Jew—or any other non-Muslim—is commendable when one intends to present Islam to him so that Allah may, through you, rescue him from the Fire. The Prophet ﷺ said, “If Allah guides one person through you, that is better for you than red camels,” meaning that if Allah leads a single individual out of disbelief by means of your effort, it is more valuable for you than the prized red camels that were the costliest of all camels to the Arabs.