An Ignorant, Malicious and False Claim has been made against the Parentage of the Prophet Muhammad
An erroneous allegation (by an Islamophobe) has been which claims Muhammad’s father is unknown as his mother had an affair with “somebody” after the death of her husband (Abdullah), the claimant also alleges Muhammed was born four years after the death of Abdullah.
In an act of responsibility it would be wise to state this article is not written due to dispute concerning the parentage of the Prophet Muhammed. It is agreed upon by historians, genealogists and theologians alike that the parents of Muhammad were Amina and Abdullah. It is consensus amongst all authorities, there has never been dispute, controversy or any complexity related to this subject amongst authorities
Then, Why Produce an Article proving the Parentage of Muhammad?
It is a pre-emptive article to make ensure false claims do not gain credence on the internet, after all, the internet is a place where malicious and misinformed claims flourish if good people sit on their hands.
ALL scholarly authority agree upon Amina and Abdullah being the parents of Muhammad, thus a claim on the contrary would be inaccurate and odd, to say the least. So this article proving the parentage of Muhammad is simply written in order to prevent false information being spread by Islamophobes on the internet
NOTE: Abdullah can be written as “Abd’Allah” and Amina can be written as Aminah
Authority tells us Abdullah (Abd’Allah) was the Father of Muhammad
The quickest way to show the Islamophobe’s claim to be false is to prove Muhammad’s father was Abdullah
Let us look at scholarly authority, Ibn Kathir confirms Muhammad’s father to be Abdullah
Ibn Kathir states “he (Muhammad) was the son of Abd’Allah who was in turn the son of his father Abd’al Muttalib” 
So Ibn Kathir, a classical expert in the life of Muhammad, states Muhammad’s father was Abdullah
What do the Genealogies tell us?
To further point to expertise and the unanimous agreement amongst scholars concerning Muhammad being the son of Abdullah and Amina we can look to the genealogies.
Ibn Hisham and al Tabari both confirm Muhammad as the “son of Abdullah” whilst giving a list of his genealogy  
The genealogy in A Chronology of Islamic History confirms Abdullah as the father of Muhammad and Amina as Muhammad’s mother. 
Other Biographers Confirm Abdullah and Amina to be the Parents of Muhammad
Al Mubarakpuri mentions the accepted fact of Abdullah being “the father of Muhammad”. 
Karen Armstrong names Muhammad’s father as Abdullah  
Quite simply there has never been a dispute related to the parentage of Muhammad in scholarly circles as all the authorities have always been in agreement on Abdullah being the father of Muhammad. This clearly illustrates the Islamophobe claiming otherwise is wrong, badly wrong.
Did Abdullah Marry Amina? Yes.
Al Mubarakpuri confirms this by telling us the grandfather of Muhammad (Abdul Muttalib) chose Aminah, daughter of Wahb bin Abd Manaf bin Zuhra bin Kilab as a wife for his son, Abdullah. 
He goes further and informs us “they were married in Makkah, and soon after Abdullah was sent by his father” on a trade journey to either Madina or Syria (two versions) 
Another biographer, Yahiya Emerick, informs us of Amina telling of signs of pregnancy after Abdullah left for the trade journey. 
Abdullah Passed Away Whilst on a Trade Journey
On the way back from this trade journey, Muhammad’s father passed away . Karen Armstrong writes “Muhammad’s father Abdullah died before Muhammad was born”.
“Most historians state his (Abdullah’s) death was two months before the birth of Muhammad. Some others state his death was two or more months after the Prophet’s birth” 
Muhammad also told us his father was Abdullah (Abd’Allah)
Muhammad told us who his father was Abdullah (Abd’Allah) whilst giving his genealogy to us:
“I am Muhammad son of Abd’Allah bin Abd’Muttalib bin Hashim bin Abd’Manaf…"(he went on to give mention to his forefathers all the way up to and including bin Nizar) 
In the same narration Muhammad tells us: “I was the product of true marriage, not fornication, right down from Adam to my father and mother”. 
Ibn Kathir lists other supporting narrations saying the same thing 
So what we have here is Muhammad confirming his parentage; i.e. his father is Abdullah and he was a product of true marriage thus any claims of him being born four years after the death of his father (Abdullah) are erroneous (false) and any claims of his mother (Amina) having an affair which bore Muhammed is shown to be erroneous too.
All Muhammad’s contemporaries considered him to be the son of Abdullah
Muhammad’s mother passed away whilst he was a young boy and he then “lived with his grandfather Abdul Muttalib” . Thus everybody saw Abd al Muttalib as Muhammad’s grandfather and therefore considered Abdullah as the father of Muhammad as Abdullah was the son of Abdul Muttalib.
After the passing on of his grandfather; “Muhammad went to live with his uncle Abu Talib” . Abu Talib was the brother of Abdullah. Once again, this shows us the community and the family of Muhammad considered Muhammad to be the son of Abdullah.
Muhammad’s Enemies Confirm Abdullah to be his Father
Whilst agreeing the contract/treaty of Hudaibiyah the Prophet initially wanted his name signed as “Muhammad, the messenger of Allah” but his enemies disagreed and wanted him to use his own name and the name of his father and thus the treaty was signed with the name “Muhammad, the son of Abdullah” . Thus showing even the enemies of Muhammad considered Abdullah to be the father of Muhammad.
I merely mention these extra points to further illustrate there was no disagreement concerning the parentage of Muhammad, everybody knew his mother to be Aminah and his father to be Abdullah.
Looking at the False Claim
Having presented all the incontrovertible evidence we can look at the false claim made by ONE dubious missionary/Islamophobe. Before doing so it is worth noting this “missionary” has a history of falsehood and is infamous for making up his own Biblical verses, such is his lack of regard for accuracy and honesty!
The Islamophobe wants us to believe Muhammad’s father is not Abdullah
We have already seen Abdullah being confirmed as the father of Muhammad by authorities such as al Mubarakpuri, Ibn Hisham and Ibn Kathir
Ibn Kathir states “he (Muhammad) was the son of Abd’Allah who was in turn the son of his father Abd’ al Muttalib”.
So the missionary/Islamophobe is simply making stuff up.
The Islamophobe claims Muhammad was born four years after the death of Abdullah
Well, we have already stated:
"Most historians state his (Abdullah’s) death was two months before the birth of Muhammad (p). Some others state his death was two or more months after the Prophet’s birth." 
So the missionary is making stuff up. NOBODY believes he was born four years after the death of his father, Abdullah.
The Islamophobe claims Muhammad was born due to an affair on the part of Aminah
It is depressing to note this “man” (the Islamophobe) would make such a claim against a lady’s honour without any regard for truth or decency. Such is this “man’s” nature
As we have seen every authority recognises Abdullah (the husband of Amina) to be the father of Muhammad and thus proves Amina is free from wrong doing. However, the defence of Amina also comes through Al Kalbi who studied Muhammad’s maternal ancestors (including Amina). Al Kalbi confirms Amina did not have an affair
Al Kalbi who investigated the maternal genealogy of Muhammad (including Amina) found no fornication in any one of them:
Muhammad bin Sa’d said, Hisham bin Muhammad al Kalbi informed us from his father who said “ I wrote out some 500 maternal ancestors for the Prophet(p) and found fornication in NOT one of them nor anything related to “the evil ways) of the Jahaliyya” 
So the Islamophobe is making claims without any investigation. If he had looked into matters before making his malicious and ignorant claims he would have noted Muhammad’s confirmation of being from a “true marriage”  as well as the other evidence presented such as the findings from Al Kalbi’s investigations
I would advise this Islamophobe to stop in his attempts to malign the good name of past personalities. Wrongly accusing a lady of adultery is not a matter to be taken lightly; this Islamophobe should rethink his ways and incorporate integrity into his reason d’être
The Islamophobe’s Strange Mind
The Islamophobe makes other bizarre and unsupported claims.
This Islamophobe also claims Muhammad made a story up about a woman being pregnant for four years and delivering the child in the fourth year which was born with teeth and hair!
The Islamophobe goes further and claims Muhammad made this story up because he was born four years after the death of Abdullah. The Islamophobe suggests Muhammad made the story up to convince people he was not the offspring of an affair.
These pronouncements are quite clearly the product of a debauched mind.
Muhammad was not born four years after the death of his father (Abdullah); this is quite clearly shown above. We do not need to repeat ourselves as we have already dealt with such an erroneous claim
Muhammad’s father has been shown to be Abdullah, thus Amina had no affair and Muhammad was not the offspring of an affair.
As for the story about a child being in a woman’s womb for four years, scholars confirm it to be a fabrication (i.e. a false or made up story). This story was made up by somebody AFTER the Prophet Muhammad passed away, so Muhammad did not make this story up. Somebody needs to pass this information onto the ignorant Islamophobe.
Yahya ibn Abi Kathir said:
“Studying Sacred Knowledge is a prayer”
May Allah's peace and blesseing be upon Muhammad and all the other Prophets
This Islamophobe is caught lying and making up his own biblical verse:
 Life of the Prophet Muhammad, Ibn Kathir, translated by Professor Trevor Le Gassick, Garnet Publishing Ltd, 1998, Volume 1, pg 131
 Ibn Hisham 1/1-2
`Tarikh al Tabari 2/239-271
 A Chronology of Islamic History, Ta-Ha Publishers Ltd, 1998, pg 10-12
 Ar-Raheequl-Makhtum by Safi-ur-Rahman Al-Mubarakpuri, Darussalam, 2002 pg 68
 Islam: A Short History, Karen Armstrong, Phoenix Press 2001 pg3
 Muhammad: Prophet for our Time, Karen Armstrong, Harper Press, 2006 pg 35-36
 Ar-Raheequl-Makhtum by Safi-ur-Rahman Al-Mubarakpuri, Darussalam, 2002 pg 69-70
 Muhammad, Yahiya Emerick, Alpha Books, 2002, pg 21-22
 Ar-Raheequl-Makhtum by Safi-ur-Rahman Al-Mubarakpuri, Darussalam, 2002 pg 70
 Life of the Prophet Muhammad, Ibn Kathir, translated by Professor Trevor Le Gassick, Garnet Publishing Ltd, 1998, Volume 1, pg 135
 Ibid pg 135-136
 Muhammad: Prophet for our Time, Karen Armstrong, Harper Press, 2006 pg 36
 Ar-Raheequl-Makhtum by Safi-ur-Rahman Al-Mubarakpuri, Darussalam, 2002 pg 404
 Life of the Prophet Muhammad, Ibn Kathir, translated by Professor Trevor Le Gassick, Garnet Publishing Ltd, 1998, Volume 1, pg 136