Some say she was born in 555 AD, and others say she was born in 567. If we accept the first one, then at the time of her marriage in 595 AD with the Prophet she was 40, and if we take the second one, she was 28. She was married twice before marrying the Prophet and had four children from previous marriages, three sons, and one daughter. Hala was one of her sons who died either in the battle of Fujjar or in a street brawl as historians have different narrations.
Famous historian Tabari says the Prophet had eight children six from Mother Khadija, four daughters, and two sons. However, Shias, in general, believe that she had only one daughter, Fatimah. We know the names of seven children of the Prophet as given by the historian. We do not have the names of the eighth child or age. The first child was born three years after the marriage, thus depending on whose account one accepts either at the age of 44 or 31, the second one's date of birth is not known, the third one was born at her age of 45 or 33, the fourth one when she was either 47 or 35. The fifth one when she was 48 or 36 and the sixth one when she was 50 or 38. However, some historians claim that the youngest daughter of the Prophet was born in 615 AD when mother Khadija was 62.
It is what we find in most history books on the ages of the Prophet's children. Qasim(598 – 600 or 601 AD), Abdullah. 615 AD), Zainab (599 – 630 AD), Ruqayyah (601 – 624 AD), Umm Kulthum (603 – 630 AD), Fatimah (ca. 604 or 615– 632), Ibrahim (630-631))
Now the latest Mayo Clinic research tells us the following. Menopause is the time that marks the end of one's menstrual cycles. It's diagnosed after one has gone 12 months without a menstrual period. Menopause can happen in the 40s or 50s; It can happen between 40 and 50.
According to the commonly held view, the first child of Mother Khadija was born when she was 43, and the last was 50 or 62. Is that scientifically possible if one determines that she married the Prophet at the age of 40 or 41? Is accepting that a part of Iman. What if we take the alternative age, 28 at the time of her wedding the Prophet? History gives us both options, and the Quran is silent on that. Can we use science to determine her age based on her reproductive cycle? Or do we have to call it a divine miracle? Her longest surviving of her children was Zainab (31 years). Others were Qasim, one year, Abdullah, less than year, Ruqayyah 23 years, Umm Kulthum 27 years and Fatima, 28 or 18 years depending whose history you accept?
If history cannot help us, can our common sense help us? Don't be agitated with this question, instead think calmly about the historical accounts that have reached us. If the historians have problems determining the age of the Prophet's wives and children, can we rely on them on other details of his life? What then is the criterion of analyzing history and sorting out facts from the fiction?
Well, the only document that dates back to the ProphetProphet's times is the Quran itself, and that is the only criterion to determine the accuracy of events reported by historians in the written form some 300 years after the death of the Prophet.