Yahya related to me from Malik that he had heard that Said ibn
al-Musayyab was asked about a woman who made a stipulation on her
husband not to take her away from her town. Said ibn al-Musayyab said,
"He takes her away if he wishes."
Malik said, "The custom
among us is that when a man marries a woman, and he makes a condition
in the marriage contract that he will not marry after her or take a
concubine, it means nothing unless there is an oath of divorce or
setting-free attached to it. Then it is obliged and required of him."