Penalty for Fighting Allah and Muhammad

The punishment for those who wage war against God and His Messenger, spreading chaos in the land, is execution, crucifixion, or the severing of hands and feet on opposite sides, or exile. This disgrace is theirs in this world, and in the Hereafter, a severe torment awaits.

5:33The only reward of those who make war upon Allah and His messenger and strive after corruption in the land will be that they will be killed or crucified, or have their hands and feet on alternate sides cut off, or will be expelled out of the land. Such will be their degradation in the world, and in the Hereafter theirs will be an awful doom;