What happens when two mutually exclusive conditional divorce oaths are sworn simultaneously based on the location of two different possessions?
Chapter on Divorce by Calculation
Al-Mughni
Book of Divorce
Primary text
If a person swears, 'If my wife is in the market, my slave is free,' and 'If my slave is in the market, my wife is divorced,' and both are in the market, the slave is freed based on the first oath, which negates the condition of the second oath (as the slave is no longer in the market). Alternatively, it is possible that both conditions are met based on the ruling that an oath concerning a specific object is tied to that object's identity, regardless of subsequent status change. Thus, if the first oath triggers manumission, the second oath's condition regarding the slave being in the market is not met unless the intent was tied to the specific slave, not the condition of his presence in the market.
Supporting text
If the oath is not tied to a specific slave, but generally to 'my slave,' then the woman is not divorced because he no longer has a slave in the market after the first oath takes effect and frees him.