to be the opposite; in that case it is an inadvertent, non-binding oath, and no expiation is required for it, in view of the Almighty’s words, “Allah will not call you to account for what is inadvertent in your oaths” (Q 5:89)—that is, He will neither punish you nor obligate you to offer expiation for oaths the swearer never intended.

Shaykh Taqī al-Dīn added: The same ruling applies when someone deliberately utters an oath believing himself to be truthful, but events prove otherwise—such as a person who swears that another will comply with his request, assuming he will obey, yet the latter does not.