What is the ruling on one who says, “I swear upon you by my right”?

Question : The questioner says: Ibn Kathir mentioned in the Sirah the statement of Abu 'Ubaydah, “I swear upon you by the truth that if you do such and such, what is the ruling on this?”

Answer : This requires verifying the authenticity of this report, because historical books generally have no sound basis, as the scholars of hadith have stated. History consists of events and incidents that people transmit, which may be documented and accurate, or they may not be. Therefore, it is obligatory for us, when such matters are found in history, to investigate and verify their authenticity. If it is authentic, then swearing by other than Allah is not permissible. If it occurs from someone who condemns it, then he is excused and his statement is not cited as evidence. Yes.