Against Muhammad

Do they not know that whoever opposes Allah and His Messenger will have the Fire of Hell

9:63Know they not that whoso opposeth Allah and His messenger, his verily is fire of hell, to abide therein? That is the extreme abasement.

Those who insult the Messenger will face a painful punishment.

9:61And of them are those who vex the Prophet and say: He is only a hearer. Say: A hearer of good for you, who believeth in Allah and is true to the believers, and a mercy for such of you as believe. Those who vex the messenger of Allah, for them there is a painful doom.

33:57Lo! those who malign Allah and His messenger, Allah hath cursed them in the world and the Hereafter, and hath prepared for them the doom of the disdained.