the validity of this is the Book of Allah Most High and the Sunnah of His Prophet, peace and blessings be upon him. Allah, Mighty and Majestic, says: โSo worship whatever you wish besides Himโ [al-Zumar: 15]. He also says: โAnd rally against them your cavalry and infantryโ [al-Isrฤ': 64], and: โIndeed, you are the forbearing, the right-minded!โ [Hลซd: 87]. The Prophet, peace and blessings be upon him, said: โAs for Abลซ Jahm, he never puts his staff down from his shoulder.โ There are many such examples.
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All of this concerns a person swearing on his own account, whether the oath is not judicially enforceable against him, or is enforceable but he comes seeking a legal opinion and no evidence establishing his oath has been presented against him. As for swearing an oath to another person to affirm a right or provide assuranceโwhether at that personโs request or voluntarily, without being asked, and whether or not the oath is judicially enforceable against the swearerโthere is considerable disagreement.
One opinion holds that the oath is understood according to the swearerโs intention. Another holds that it is understood according to the intention of the person to whom it is sworn. A third holds that, if the oath was requested, it is understood according to the intention of the person to whom it is sworn; if offered voluntarily, it is understood according to the swearerโs intention. [Another opinion reverses this distinction: if the oath was requested, it is understood according to the swearerโs intention; if offered voluntarily, it is understood according to the intention of the person to whom it is sworn.] This is Yahyฤโs report from Ibn al-Qฤsim concerning oaths involving divorce. The first opinion is that of Ibn al-Mฤjishลซn and Sahnลซn. Yet another opinion holds that the distinction between a requested and a voluntary oath applies only to oaths that are judicially enforceable against the swearer; where they are not enforceable, there is no such distinction. This is Asbaghโs report from Ibn al-Qฤsim in the Book of Vows.
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This applies so long as the swearer does not use his oath to deprive another person of a right. If he does, no intention he may have held will avail him. He is sinful, has broken his oath, has disobeyed Allah, Mighty and Majestic, through his action, and falls under the warning. The Messenger of Allah, peace and blessings be upon him, said: โWhoever deprives a Muslim of his right by means of his oath, Allah will forbid