Muhammad: Impeached by His Own Teachings
Evidence that Muhammad Was a False Prophet According to His Own Teachings:
Muhammad said if he was a false prophet Allah would sever his aorta (Surah 69:44-46; Tafsir Al-Jalalayn, on Surah 69:44-46). As it turns out, when Muhammad was dying he said he could feel his aorta being severed: Sahih Al-Bukhari 59:713; Sunan Abu Dawud 39:4498, 4499; al-Tabari, Volume VIII, page 124.
Muhammad spoke badly about bells (Sahih Muslim 24:5277; Sunan Abu Dawud 14:2548), said there is a devil along with each bell (Sunan Abu Dawud 34:4218), and said the bell is the musical instrument of Satan (Sahih Muslim 24:5279; Sunan Abu Dawud 2556 [Dar-us-Salam reference]). Interestingly, he also said his supposed revelations came to him like a ringing bell: Sahih Al-Bukhari 1:2, 54:438; Sahih Muslim 30:5765; Sunan An-Nasai 11:934.
Muhammad committed shirk, the unforgivable sin in Islam. Muhammad said in the Quran that shirk (polytheism; idolatry; ascribing partners beside God) is the unforgivable sin (Surah 4:48, 116), yet Muhammad himself committed shirk by acknowledging the three goddesses al-lat, al-uzza, and manat (satanic verses): Ibn Ishaq's Sirat Rasul Allah, pages 165-167; al-Tabari, Volume VI, pages 107-112; Tafsir Al-Jalalayn, on Surah 22:52-53. (7)
Muhammad affirmed that Jesus was a true prophet of God (Surah 3:52, 5:111-117, 61:14), yet he repeatedly contradicted what Jesus said: See Chapter 22: Jesus vs. Muhammad: Who Should We Believe?
Muhammad affirmed that Moses was a true prophet (Surah 61:5) and that the Torah is God's word (Surah 3:3-4, 5:66, 5:68, 7:157, 10:94), and according to what Moses said (Deuteronomy 18:20), if some someone speaks something in the name of God that isn't from God, he is a false prophet. Well, Muhammad once delivered a revelation that promoted polytheism (Ibn Ishaq's Sirat Rasul Allah, pages 165-167; al-Tabari, Volume VI, pages 107-112; Tafsir Al-Jalalayn, on Surah 22:52-53). Later, he claimed that Satan had tricked him, and then receives another convenient revelation absolving him of that false revelation by saying that all prophets have said wrong things before because of Satan (Surah 22:52). So this means if Muhammad was right, then Moses was a true prophet, and if Moses was a true prophet, then according to Deuteronomy 18:20, Muhammad is a false prophet. So if Muhammad is right, then he is wrong.
Again, Muhammad affirmed that Moses was a true prophet (Surah 61:5) and that the Torah is God's word (Surah 3:3-4, 5:66, 5:68, 7:157, 10:94), and the Torah says not to revere stones as idols (Leviticus 26:1) and to destroy stones that are idols (Leviticus 33:52), yet Muhammad did the exact opposite of this and violated that command by kissing the black stone at the Kaaba, which was what the pagans did: Sahih Al-Bukhari 26:667, 673, 679.
Muhammad commanded Christians to judge by the Gospels in Surah 5:47, but if Christians obey this command they will quickly conclude from the Gospels that Muhammad was a false prophet because the Gospels clearly show Jesus is God. If Christians are not to obey this command, then it must mean that Muhammad and the Quran are wrong. Either way, Muhammad must be wrong.
Muhammad's evidence that the Quran was from God was that it's so well written and superior to other books that it can't be matched (Surah 2:23, 10:38, 11:13, 17:88). Well, the Quran has been matched by a book titled "The True Furqan" (al-Furqan al-Haqq). The book was written in Arabic mirroring the Quran, but it incorporated elements of Christian teachings. This book was so explosive to the Islamic faith that the country of India banned it: See Chapter 17: The Quran: A Book That's Been Matched
Further Evidence That Muhammad Was a False Prophet:
Muhammad told the Jewish girl that poisoned him that Allah wouldn't allow him to die from the poisoning, yet he died from the poisoning: Sahih Muslim 26:5430; Sahih Al-Bukhari 59:713; al-Tabari, Volume VIII, page 124.
Islamic sources report that Gabriel, who supposedly is the one who gave the revelations to Muhammad, prayed for healing for Muhammad when he was ill and said that he would be healed, yet Muhammad died and wasn't healed: Ibn Sa’d, Kitab Al-Tabaqat al-Kabir, Volume II, page 265; Sahih Al-Bukhari 59:713; al-Tabari, Volume VIII, page 124.
The same spirit (supposedly the Angel Gabriel) that lied to Muhammad and told him that someone's physical characteristics and looks are determined by whether the male or female "discharges" first during intercourse (Sahih Al-Bukhari 55:546) is the same spirit that supposedly revealed the Quran to him, thus proving that the spirit behind the Quran is not from God. Physical characteristics are determined by genetics and has nothing to do with who "discharges" first.
Muhammad didn't think the revelation he had received was from God, but rather he had to be convinced that he was a prophet of God by his wife Khadija and her cousin Waraqa: Sahih Al-Bukhari 87:111; Ibn Ishaq's Sirat Rasul Allah, pages 106-107; al-Tabari, Volume VI, pages 68-69.
Muhammad himself thought that he might've been possessed by an evil spirit after his first encounter with the spirit that gave him the revelations: Ibn Ishaq's Sirat Rasul Allah, page 106.
Muhammad had magic worked on him that resulted in him thinking he had done something that he had not: Sahih Al-Bukhari 54:490, 71:658, 660, 661, 75:400.
One time a man named Abdullah bin Salam asked Muhammad about why some people resemble their father and some their maternal uncle because he thought only a true prophet would know the answer. Muhammad incorrectly answered and said it's based on whether the father or mother climaxes first: Sahih Al-Bukhari 55:546.
He said he could turn a mountain into gold proving his prophethood, but then he conveniently decided to not do it: Musnad Ahmad 2166 (Dar-us-Salam Reference).
He said he was going to tie a demon up to a pillar of a Mosque so that everyone else could see it, but then he conveniently decided to let it go instead: Sahih Al-Bukhari 55:634.
He said that "The Hour" (the end of the world) and himself were sent together, and that "The Hour" almost preceded him. Over 1,400 years later and the world still has not ended: Musnad Ahmad 22947 (Dar-us-Salam Reference).
He discouraged questions, which is highly suspicious. Con artists hate questions because questions expose lies. In the Quran, Muhammad said to not ask questions and even said there were people in the past who left Islam because they asked questions (Surah 5:101-102). He said Allah hates when people ask too many question (Sahih Al-Bukhari 24:555, 41:591). He got angry when someone persistently asked him about things he did not like (Sahih Al-Bukhari 3:92). He got so angry by one question that his face became red (Sahih Al-Bukhari 3:91). He told his followers to stop asking him questions and to just obey his commands and that people before his followers' time were destroyed by asking questions and having differences with their prophets (Sahih Al-Bukhari 92:391). His companions were so afraid to question him themselves that they were excited when an intelligent outsider would question him (Jami at-Tirmidhi 619 [Dar-us-Salam Reference]). His companions once asked someone else to ask Muhammad a question because they were so afraid to ask him the question themselves (Jami at-Tirmidhi 3203 [Dar-us-Salam Reference]). He said the question about who created God is from Satan and when one has that question they should give it up and seek refuge with Allah (Sahih Al-Bukhari 54:496). He said the greatest sinner among the Muslims is the one who asks about something that is not forbidden but it becomes forbidden (haram) because of the asking (Sahih Al-Bukhari 92:392).