Is it obligatory for a master to require *istibra'* (waiting period for determining purity of lineage) for his female slave whom he married off, if the husband divorces her?

Primary text

It is not obligatory for the master to require *istibra'* for his female slave after her husband divorces her. However, if the divorce occurs after consummation, or if the husband dies, she must observe the waiting period (*'iddah*). This view is held by Abu Hanifa. The justification is that the master's ownership rights over her sexual use did not genuinely renew, similar to a woman released from religious prohibition or a pawned woman whose pledge is redeemed, for whom *istibra'* is unanimously deemed unnecessary. *Istibra'* is legislated based on the presumption of renewed ownership, which is absent here.