The Ruling on the Group of Da'ish and Distinguishing Lawful Jihad

Question:
This questioner says: What is your opinion, may Allah bless you, regarding what is called today the group of Da'ish? And how do I distinguish between lawful jihad and other things?

Answer:
The group of Da'ish and others, everyone who strays from the straight path, they are of the party of Satan, either from the Khawarij or from others among the callers to misguidance. They are not to be resisted except with beneficial knowledge. These people.
They are among those about whom Allah said: "Fight the disbelievers and the hypocrites." These people will be in the rank of the hypocrites because they call themselves Muslims and perform some of the religious rituals, but they are callers to misguidance. They are not to be resisted except with beneficial knowledge, refuting their doubts and falsehoods, and warding them off from the Muslims. And by Allah, they will not establish a standing, if Allah wills, if the Muslims engage in their jihad, clarify their doubts and errors, and refute them. And this is not done by identity or zeal, but rather by the Book and the Sunnah and beneficial knowledge.
That which Allah uses to stamp out falsehood. The weapon is in your hands right now, and it is the Book of Allah and the Sunnah of His Messenger (peace and blessings be upon him). No one can resist the Book of Allah or resist the Sunnah of the Messenger of Allah. But religion, the Book, and the Sunnah do not triumph by themselves. Rather, they triumph by the permission of Allah, and then through its men and sons who carry knowledge and action, in Allah, regardless of the blame of any blamer.
So this life is not merely eating, drinking, and enjoying fruits, and life is not like this. This life is fleeting; the life that remains is the Hereafter, meaning the complete life, if only they knew. Indeed, this worldly life is a place of work for the sake of attaining the Hereafter and the eternal life. So the world is a place of work and not a place of reward, and the Hereafter is a place of reward and not a place of work. So you are now in the place of work, so fulfill what Allah has made obligatory upon you, and you are in this school and in other places of