Answered by: Maulana Abdul Muktader
How much did Aisha bint Abi Bakr weigh?
بِسْمِ اللهِ الرَّحْمنِ الرَّحِيْم
In the name of Allah, the Most Gracious, the Most Merciful
The exact weight of the mother of the believers, Aisha رضي الله عنها is not known. However, it is known that before she moved into the Prophet’s صلى الله عليه وسلم house, she was skinny and would struggle to put on weight until her mother gave her cucumber and dates to eat as a form of weight gaining.
عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا، قَالَتْ: أَرَادَتْ أُمِّي أَنْ تُسَمِّنَنِي لِدُخُولِي عَلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَلَمْ أَقْبَلْ عَلَيْهَا بِشَيْءٍ مِمَّا تُرِيدُ حَتَّى أَطْعَمَتْنِي الْقِثَّاءَ بِالرُّطَبِ فَسَمِنْتُ عَلَيْهِ كَأَحْسَنِ السَّمَنِ
Narrated Aishah, Ummul Muminin: My mother intended to make me gain weight to send me to the (house of) the Messenger of Allah صلی اللہ علیہ وسلم. But nothing which she desired benefited me till she gave me cucumber with fresh dates to eat. Then I gained as much weight (as she desired).
Moulana Aqil writes in his commentary of Sunan Abi Dawood that, after the wedding and before the consummation if the woman is skinny then the mother should think of a way to trial things through which she would gain energy and thickness.
Only Allah knows best
Written by Maulana Abdul Muktader
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 Sunan Abu Dawood 3: Chapter 184, Hadith 3903
 Ad- dur Al-Mandood v.6 pg.113 Maktabah Khaliliyah