Answered by Shaykh Faraz Rabbani
Question : Is there any praise whatsoever if one swears by Allah and it’s a lie but there is room for interpretation where it could be true, so that two (or more parties) can mend their relationship?
Does one have to do kaffarah?
Answer : In generally, the sunna is to avoid swearing by Allah–as it is a serious matter–unless there is good reason or benefit in doing so.
This is especially true when the matter isn’t clearly true.
Thus, when mending relations, one should avoid swearing on “dubious words” unless there is clear likely benefit–and one firmly intended a true, plausible meaning.
And Allah alone gives success.