
All the prophets of God received the direct word of God, from Moses to Isaiah and Malachi all of them delivered the word of God as God gave them the words to speak. In Islam this is not the case, we’re told that an angel Jibril (supposedly Gabriel) visited Muhammad in a cave.
In actuality the prophet of Islam plagiarized many teachings from other religions, he even plagiarized words from his own scribe and passed it off as Qur’an. The Apostasy of Abdullah Ibn Sa’d Ibn Abi Sarh is a huge problem because it shows that Muhammad never received any inspiration from Allah.
Here’s the Surah in question:
Surah 23:12-14 Verily We created man from a product of wet earth; Then placed him as a drop (of seed) in a safe lodging; Then fashioned We the drop a clot, then fashioned We the clot a little lump, then fashioned We the little lump bones, then clothed the bones with flesh, and then produced it as another creation. So blessed be Allah, the Best of creators!
Tafsir Asbab Al-Nuzul by Al-Wahidi (Surah 6:93)

According to the Muslims own Tafsir Muhammad had his scribe write something for him. Muhammad dictated the verses regarding the believers to and Abd Allah was amazed by what he heard saying “So blessed be Allah, the Best of Creators!”. Muhammad the plagiarizer said that Allah revealed this to him also. Muhammad then tells Abdullah to put those words into Qur’an. The false prophet Muhammad took his scribe’s words and added them to his “revelations” this proves the Qur’an is man-made and not from God. What happens next? Abdullah figured out that Muhammad was a false prophet and left Islam.

Abd Allah became an apostate and renounced Islam. He came to the realisation that Muhammad was not a prophet because Muhammad took Abdullah’s words and passed them off as inspiration from Allah. This means either Muhammad is a false prophet or Abdullah is also a prophet who received Qur’an from Allah.
Either way, this proves Muhammad never received Qur’an from Allah, it’s only a fictional book made by a mad man called Muhammad.