In the hadith of the Prophet (peace and blessings be upon him): “May he succeed, and his father, if he is truthful,” is there an oath by other than Allah?

Question:
He says: Honorable Shaykh, may Allah grant you success. Regarding the hadith of the Prophet (peace and blessings be upon him), “May he succeed, and his father, if he is truthful,” what is the guidance on this hadith? And is there an oath by other than Allah in it?

Answer:
They answered this with two answers. “May they succeed, and their father, if they are truthful”—they answered this with two answers. The first answer is that this was before the prohibition of swearing by other than Allah. In the beginning, they used to swear by other than Allah, and they were not prevented from doing so. Then this was abrogated, and they were prohibited from swearing by other than Allah, so this was before the abrogation. The second answer is that this was not intended as an oath; rather, it is something that slips off the tongue as idle speech. This is from the idle speech that slips off the tongue without intention. He, Mighty and Majestic, said: “Allah does not hold you accountable for idle speech in your oaths,” which is what slips off the tongue in the form of an oath but is not intended. “Allah does not hold you accountable for idle speech in your oaths, but He holds you accountable for what your hearts have earned.” And in the other verse: meaning you intended to make it. Yes.