The ruling on saying "By your life" and whether it is an oath by other than Allah

Question:
He says: Honorable Shaykh, may Allah grant you success, is the lam in the phrase "by your life" a lam of oath? And is it an oath by other than Allah?

Answer:
Yes, the lam is a lam of oath. And when Allah (Exalted and Majestic is He) said to His Prophet (peace and blessings be upon him), "By your life," Allah swore by the life of the Prophet (peace and blessings be upon him). And Allah swears by whatever He wills of His creation. As for us, we do not swear except by Allah. And when "by your life" or "by my life" appears in the poetry of the Arabs, they do not intend it; they say that this is not intended as an oath.
It is not intended as an oath, but rather it slips off the tongue without intention, like "May your mother be bereaved of you, O Mu'adh." The Messenger does not curse Mu'adh; rather, this is a phrase that slips off the tongue from the expressions of the Arabs, and its meaning is not intended. Yes.