http://www.muhammadanism.org/Quran/SatanicVerses.htm
When the inhabitants of Mecca heard Muhammad's confess the importance of the ancient goddesses inside the Ka'aba, they immediately revoked their ban on him. Those who had immigrated to Abyssinia (Ethiopia) started to return home after hearing Muhammad's confession and his acceptance in Mecca. But when they arrived, they were shocked to hear that Muhammad had retracted his confession and admitted that he had fallen prey to the whispering of Satan. Thus, today Islam considers Sura an-Najm (Star) 53:19-22 are related to the time when Muhammad spoke the the Satanic Verses. Salman Rushdie did not invent the Satanic verses.[sup]4[/sup]
In Sura Hajj (Pilgrimage) 22:52-53, Muhammad confessed his mistake, alleging that all prophets were tempted by Satan who inspire them with demonic verses, as if they were actually revealed by God. But later on Allah abrogated those Satanic Verses with new revelations and instructs his prophets with new verses. According to Islam, Allah permits such demonic inspiration to test weak believers and to cut off those with hardened hearts.
Never did We send a messenger or a prophet before thee, but, when he framed a desire, Satan threw some (vanity) into his desire: but Allah will cancel anything (vain) that Satan throws in, and Allah will confirm (and establish) His Signs: for Allah is full of Knowledge and Wisdom:
That He may make the suggestions thrown in by Satan, but a trial for those in whose hearts is a disease and who are hardened of heart: verily the wrong-doers are in a schism far (from the Truth):
Hajj (Pilgrimage) 22:52-53. Yusuf 'Ali's translation
The true, vital issue about the Satanic verses is this. If Muhammad were unable to distinguish Satan's voice from God's voice, then could there be verses in the Qur'an that Muhammad assumed were from God but were really from Satan? Maybe much of the Qur'an is Satanic in origin, in spite of Muhammad's conviction that it was entirely from Allah.
The Qur'an clearly states that Muhammad spoke in the name of God and that he said things that God had not commanded him! Next, he charges that all the prophets of God voiced Satanic statements! According to the holy law of God, Muhammad ought to have been put to death as a false prophet! According to the Holy Scriptures, if a prophet spoke anything in the name of LORD that was not from Him, the prophet must be put to death! Muhammad spoke in the name of Allah and then admitted that he had really spoken the words of Satan.
But a prophet who presumes to speak in my name anything I have not commanded him to say, or a prophet who speaks in the name of other gods, must be put to death. Deuteronomy 18:20 (NIV)