What is the ruling on supplicating unjustly and aggressively against another person who has not erred, or has erred with a minor mistake that does not warrant such a supplication? Is this supplication accepted, and what is the religious ruling on the one who makes such an oath (the swearer)? And what is required of the one against whom the oath is made (the sworn-against) concerning the swearer?

It is not permissible for a Muslim to make supplications involving injustice and aggression, and such a supplication will not be answered due to its sinfulness and transgression, as Allah Almighty says: "Indeed, He likes not aggressors." And as the Prophet, peace and blessings be upon him, said: "The supplication of a servant will be granted as long as he does not supplicate for a sin or for the severance of kinship ties."

It is permissible to supplicate against an oppressor to the extent of their injustice, without exceeding it, because supplication is a form of retribution, as Allah Almighty says: "And if you punish, then punish with the like of that with which you were punished." As for fulfilling the oath of the one who swore, the majority of scholars view it as desirable, not obligatory.