Genealogy of Khadijah's daughters

Khadijah bint Khuwaylid, the first wife of the Islamic prophet Muhammad, had six children. Some Shia dispute whether all of the children were born in her marriage to Muhammad, or if three of the four daughters were born to a previous marriage.

Introduction
The dispute extends to Umm Kulthum and Ruqayyah. Shias believe Fatima was the only daughter of Khadija, whereas Ruqayya and Umm-e-Kulthum were the daughters of Khadija's sister, Hala, who had strained relations with her husband and the two girls were brought up by Khadija after the death of Hala. It is notable that Muhammad also had an adopted son, Zayd ibn Harithah.

This debate becomes significant and contentious since two of the children, Ruqayyah and Umm Kulthum, were consecutively married to Uthman, one after the death of the other. Due to marrying two of the Prophet's daughters, Uthman was called 'Dhul Nureyni' (or Keeper/Owner of Two Lights). Uthman became the third Rightly Guided Caliph and first Banu Umayyad Caliph.

Views
The Quran refers to Muhammad's daughters as "banatika", the plural for "daughters". This is the argument against the view of that the sisters of Fatimah were not the biological daughters of the prophet Muhammad as according to the universally accepted islamic creed that the Qur'an will remain unaltered till it is lifted totally. Shia discard this logic based on a similar contradiction found in context of event of Mubahila for which Quranic verse 3:61 was revealed, though the verse calls for (in 'Arabic) at least 3 "sons", at least 3 "women", and at 3 least "selves" from each side in the Mubahila, only Imam Hasan ibn 'Ali and Imam Husain ibn 'Ali represented the "sons" of the Prophet, only Fatima al-Zahra represented the "women", and only 'Ali ibn Abi Talib represented as the "self" or "soul" of the Prophet. ,

Muslim view
Regardless of which marriage they were born in, both Shi'a and Sunni view all the children with the high respect.

Sunni view
Sunni outright reject any notion of them being born anywhere but in Muhammad's marriage. Sunni honour Uthman as "possessor of the two lights", in reference to him being married to two of Muhammad's biological children. Sunni believe that Ruqayyah was born three years after the birth of Zainab, when Muhammad was 33. Many Sunnis hold that the claim that Fatima is the only biological daughter is pushed by the Shia in order to strengthen the legitimacy of the Shia Imams. If there were other biological sisters who had children, then they would have as much a right to claim the caliphate as Fatima's descendants. Sunni's also reject the claim because of the Quranic verse 33:59.

''“O Prophet! Say to your wives and your daughters and the women of the believers that they let down upon them their over-garments; this will be more proper, that they may be known, and thus they will not be given trouble; and Allah is Forgiving, Merciful.”''

Quran uses the plural word for daughters, not the singular form. The Arabic term used is “banaatuka” which means “your daughters.” If it was one daughter only, it would be “bintuka.”

Shi'a view
Shia scholars view them as adopted children, and that this fact is obscured in order to give greater merit to the first Banu Umayyad Caliph. Those Shi'as view is that Fatimah was Muhammad's only biological daughter and the only one who married a Caliph, i.e., Ali. They argue it improbable for Khadija to have given birth to so many children at such an advanced age, while at the same time having abstained from having children in both her previous marriages. A third version also exists which views the two daughters as being the children of Khadijah's deceased sister.

One source states: Who were Khadija's children by her second husband? This is another controversy that revolves round the other daughters or step-daughters of Muhammad besides Fatima. These daughters, chronologically arranged, are: Zainab, Ruqayya, and Ummu Kulthoom. Some historians say that these were Khadija's daughters by her second husband, whereas others insist they were her daughters by Muhammad. The first view is held by Sayyid Safdar Husayn in his book The Early History of Islam wherein he bases his conclusion on the contents of al-Sayyuti's famous work Tarikh al-khulafa wal muluk (history of the caliphs and kings). We hope some of our Muslim sisters who read this text will be tempted to research this subject.

states: It is not known with any degree of certainty who were these three girls. Most of the Sunni historians claim that they were the daughters of Muhammad and Khadija. According to some other historians, they were the daughters of Khadija by an earlier marriage.

The Shia Muslims disagree. They assert that Zainab, Ruqayya and Umm Kulthoom were not the daughters of Muhammad and Khadija; in fact, they were not even the daughters of Khadija by any earlier marriage; they were the daughters of a (widowed) sister of Khadija. Khadija's sister also died, and upon her death, she brought the three girls into her own house and brought them up as her own children.

According to the Shia Muslims, Muhammad and Khadija had three and not six children.The first two of them – Qasim and Tayyeb or Tahir – were boys, and both of them died in their infancy. Their third and the last child was a girl – Fatima Zahra. She was their only child who did not die in infancy.

The girls – Zainab, Ruqayya and Umm Kulthoom – could not have been the daughters of the Prophet of Islam. If they were, he would not have given them in marriage to the idolaters which the husbands of all three of them were. It's true that all three girls were married long before the dawn of Islam. But then he did not violate any of the imperatives of Qur’an at any time – before or after he was ordained God's Messenger. And Qur’an is explicit on the prohibition of the marriage of a Muslim woman to a pagan.

Shi'a argue that there is a lack of narrations from Muhammad regarding his other daughters, and they use it to argue that if they held the same position in Muhammads eye, this would not be the case:

The Shi'a website Answering-Ansar states: If anything this serves as the greatest proof that Sayyida Fatima (as) was the sole daughter of Rasulullah (s). If these daughters indeed existed then Rasulullah (s) would have certainly apportioned them their share of inheritance as he had done with Sayyida Fatima (as). The very fact that we have no historical evidence of him ever giving them anything as a gift / inheritance is the clearest evidence that they did not exist. If they did exist then we have to accept that Allah and his Prophet (s) were unjust. After all the same Prophet (s) who marries Sayyida Fatima (as) according to revelation from Allah marries the other three daughters to kaafirs!

The same man that showered all manner of honour on Sayyida Fatima deeming her pain to be on par with his, giving her the title Leader of the Women of Paradise does not bother to relay even a single Hadith in praise of his other daughters. Ahl'ul Sunnah's authority work Mishkat al Masabeeh, under the Chapter 'Bab Fadail Ahl'ul bayt' has 49 traditions with regard of the relatives of Muhammad including his uncle Abbas, even his adopted son Zaid. Curiously the author of a book that takes traditions from TEN esteemed Sunni works fails to cite even a single Hadeeth on the "other daughters" in this chapter. ... The truth is that Maula 'Ali ( was the only son in law of Muhammad as we read in 'Riyadh al Nadira' Volume 3 page 220, Dhikr Fadail 'Ali:

Rasulullah said to 'Ali 'You possess three virtues not possessed by anyone else: ... This virtue (Rasulullah being father in law) would not be exclusive if Rasulullah also had other son in laws! If Nawasib try to argue that Uthman's marriage may have occurred later we should point out that according to the Ahl'ul Sunnah the daughters of Rasulullah were married long before Sayyida Fatima, and were the wives of two of Abu Jahl's sons. Rasulullah could not have praised 'Ali for this exclusive honour if he had other sons in law. ... The famed title of Uthman 'Dhul Nurayn' coming from the mouth of Muhammad(as asserted by sunnis) is not present in any of the six esteemed works of Ahl'ul Sunnah. When the very existence of these daughters cannot be established then how can we accept that Uthman was the possessor of two lights? ... It is indeed ironic that the Salafi and Deobandi Nawasib reject the notion of Muhammad being created from Nur (Light), rather they deem him an ordinary human like us created from mud. Curiously when it comes to honouring Uthman suddenly he is deemed Dhul Nurayn 'the possessor of two lights'. If Prophet (s) is not 'Light' then how can Uthman become the possessor of 'Two Lights'? How can this then be used as an excuse that he married the 'supposed' two daughters of Muhammad?
 * 1) You have a father in law like me.
 * 2) You have received my truthful daughter as your wife
 * 3) You have received pious sons such as Hassan and Husayn

Some individuals have said that Khadija had no previous husbands.

Shia also reject the Sunni claim based on Quranic verse 33:59 by citing similar contradiction in context of event of Mubahila for which Quranic verse 3:61 was revealed, though the verse calls for (in 'Arabic) at least 3 "sons", at least 3 "women", and at 3 least "selves" from each side in the Mubahila, only Imam Hasan ibn 'Ali and Imam Husain ibn 'Ali represented the "sons" of the Prophet, only Fatima al-Zahra represented the "women", and only 'Ali ibn Abi Talib represented as the "self" or "soul" of the Prophet. ,

Marriage rules
Based on narrations found even in Sunnī sources, Muhammad said that daughters of his household could only marry those who were from Banū Hāshim. .

But(if it is assumed that Zainab, Ruqayyah and Umm Kulthum were daughter of Muhammed and Khadijah) this argument does not seem to be correct as:
 * Zainab was married to Abu al-Aas ibn al-Rabee who belonged to Banu Abd Shams clan of the tribe Quraish.
 * Ruqayyah and after her death Umm Kulthum were married to Uthman bin Affan who belonged to Banu Umayya clan of the tribe Quraish.