without conscious intent—such as when someone blurts out, “No, by Allah,” or “Yes, by Allah,” in the middle1 of his conversation.
The fourth condition is that the oath relate to an independent, future matter; therefore no expiation is required for an oath concerning something in the past. If he knowingly lies, that is forbidden, but if he does not, nothing is due from him.
The fifth is breaking the oath by doing what he had sworn to leave, or by omitting2 what he had sworn to do. If he fixed a specific time, that time becomes binding; if he did not, the oath is not considered broken until he despairs of fulfilling it because the object of the oath has perished or the swearer himself dies.
If someone swears by Allah, “I will not do such-and-such,” or, “I will certainly do such-and-such,” and then adds, “if Allah wills,” or, “if Allah so desires,”3 or, “unless Allah wills,” and the clause of exception is attached to the oath either verbally or by legal reckoning, he does not incur a broken oath whether he acts or refrains, on the condition that he intended the exception before completing the statement from which it is excepted.
Section
Whoever says, “My food is forbidden to me,” or, “If I eat such-and-such it is forbidden,” or, “If I do such-and-such it is forbidden,” does not thereby make it unlawful; nevertheless, should he proceed to do it, he must pay the expiation for an oath.
And whoever declares, “He is a Jew,” or, “He is a Christian4,” or “a Magian,” or, “he worships the cross or the East if he does such-and-such,” or says, “I repudiate Islam,” or, “I repudiate the Prophet—may Allah bless him and grant him peace—”