Is a *mahr* (dower) obligatory when a master marries his male slave to his female slave?

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No *mahr* is obligatory in this situation. If it were obligatory, it would be due to the female slave's master. However, no monetary obligation is due from a master to his slave. Abu Abdullah stated that if a master marries his male slave to his female slave, it is preferred that it be done with a *mahr* and witnesses. If the male slave subsequently divorces her, the *mahr* becomes due upon his manumission. Jaber held that marrying them without a *mahr* is permissible.