An-Nisaa — Ruku 10

O you who have believed, take your precaution and [either] go forth in companies or go forth all together.

And indeed, there is among you he who lingers behind; and if disaster strikes you, he says, "Allah has favored me in that I was not present with them."

But if bounty comes to you from Allah, he will surely say, as if there had never been between you and him any affection. "Oh, I wish I had been with them so I could have attained a great attainment."

So let those fight in the cause of Allah who sell the life of this world for the Hereafter. And he who fights in the cause of Allah and is killed or achieves victory - We will bestow upon him a great reward.

And what is [the matter] with you that you fight not in the cause of Allah and [for] the oppressed among men, women, and children who say, "Our Lord, take us out of this city of oppressive people and appoint for us from Yourself a protector and appoint for us from Yourself a helper?"

Those who believe fight in the cause of Allah, and those who disbelieve fight in the cause of Taghut. So fight against the allies of Satan. Indeed, the plot of Satan has ever been weak.