The ruling on going to jihad without the permission of the one in authority

Question:
The correct path for them is that the Imam is a blessing from Allah the Exalted. The Imam establishes the hudud (fixed Qur'anic punishments), the Imam delivers the rights to the oppressed, the Imam spreads security over the lands by Allah’s will, the Imam is a blessing from Allah the Exalted. Some of the youth in these days go to jihad in various regions, and they consider it an individual obligation (fard 'ayn), based on the fatwas (scholarly legal rulings) of some students of knowledge or scholars given to them. Is this action correct?

Answer:
It is not permissible for them to go except with the permission of the Imam, because they are subjects, and the subjects must obey the Imam. If he permits them, they must also have the satisfaction of their father, so they do not go except with their father’s satisfaction, because a man came to the Prophet (peace and blessings be upon him)