The ruling on fighting without the permission of the one in authority

Question:
May Allah reward you, Honorable Shaykh. This questioner says: Is there a precedent in the Prophet’s (peace and blessings be upon him) dispatching of expeditions and secret missions, and the secret mission he led himself, for those who fight today in the lands of the Muslims from among the people of jihad, and a justification for the killing and destruction they commit?

Answer:
They fight with the Imam of the Muslims or by the order of the Imam of the Muslims. This is destruction, and this is corruption in the land. These are corrupters in the land who seek corruption in the land. Fighting does not take place except with the one in authority over the Muslims or by his order, either by his leadership or by his command and organization. Yes.