The example of those who disbelieve in their Lord is [that] their deeds are like ashes which the wind blows forcefully on a stormy day; they are unable [to keep] from what they earned a [single] thing.
That is what is extreme error.
Koran 14:18
Muhammad, in his Koran, addresses a sentence, verse, or passage to “Anonymous They”, with “they”, “them”, “he”, “your”, “the people”, and so on, without naming them. For more, read Anonymous They.
Muhammad spoke about Allah in the third person. This means this passage is not the perfect words of the perfect Qur’an from perfect Allah. Thus, Allah is false, imaginary, and fictional, which means Islamic doctrine and Islam are nonsensical and false.
Those who “disbelieve in their Lord” refer to the Quraysh who already worshipped Allah. Muhammad claims that their deeds are like “ashes which the wind blows forcefully on a stormy day”. Let’s look at Petra, Jordan, the original Mecca:


It’s 1400 years later, Petra, Jordan, while ruins, hasn’t blown away like dust, yet.
As for their “deeds”, let’s recall that in Quraysh polytheism, the Quraysh already believed that there was no resurrection, that their lives and their dead bodies would eventually turn into dust, and they would be remembered by their relatives and descendants, as shown by the Quraysh customs inherited into the Koran about remembering and honouring one’s ancestors. Guess Muhammad couldn’t keep that straight. In short, Muhammad is reiterating Quraysh polytheism here, and accepting it, essentially.
Muhammad is essentially reiterating the beliefs of the Quraysh about their deaths and non-existent afterlives. It seems weird to put in a book supposedly about Islam from a divine being called Allah. This shows that Allah is not the source of the Koran. Muhammad is.
And worse, Muhammad didn’t know he would later invade, murder those who opposed him and force everyone to become Muslim. Thus contradicting himself here, showing yet again that Muhammad was a false prophet, a liar and a tyrant.
Muhammad was a false prophet, for a false god, Allah, for a false religion, Islam, without even a false book, the Koran.
