the marriage in her late teens:

Hishām ibn ʿUrwa was the only one to narrate the ḥadīth ,[13] and he narrated it when he was in Iraq, a time when he was accused of having a bad memory. Asmaʾ, the older sister of ʿĀʾisha, was ten years older than ʿĀʾisha. Since Asmaʾ passed away in 73 AH/692 CE at the age of 100, this places ʿĀʾisha at eighteen years old when the marriage was consummated. Fāṭima was born at the time the Kaʿba was rebuilt, when the Prophet ﷺ was thirty-five years old, and she was five years older than ʿĀʾisha, making Āʾisha around twelve years old when she married the Prophet. ʿĀʾisha participated in the Battle of ʾUḥud. Ibn ʿUmar narrates that the Prophet did not permit himstrong piece of evidence.

Asmaʾ, the elder sister of ʿĀʾisha, was ten years older than ʿĀʾisha

ʿAbd al-Raḥmān ibn Abī al-Zinād states that Asmaʾ was ten years older than ʿĀʾisha. In addition, it has been confirmed that she passed away in the year 73 AH/ 692 CE at the age of one hundred.[20] If this was the case, that would make her twenty-seven years old at the time of hijra, meaning ʿĀʾisha would have been seventeen at the time of hijra. We know that ʿĀʾisha was married two or three years before hijra, thus placing her at fourteen or fifteen years old at the time of marriage and seventeen or eighteen when the marriage was consummated.

The math in this scenario provides a strong argument that ʿĀʾisha was in her late