It wasnarrated that Jabir bin 'Abdullah said:
"The wife of Sa'd binRabi' came with the two daughters of Sa'd to the Prophet (ﷺ)andsaid: 'O Messenger of Allah, these are the two daughters ofSa'd. Hewas killed with you on the day of Uhud, and their paternaluncle hastaken all that their father left behind, and a woman isonly marriedfor her wealth.' The Prophet (ﷺ) remained silentuntil the Verse ofinheritance was revealed to him. Then theMessenger of Allah (ﷺ)called the brother of Sa'd bin Rabi' andsaid: 'Give the two daughtersof Sa'd two thirds of his wealth,and give his wife on eighth, andtake what is left.'"
English reference: Vol. 4, Book 23, Hadith 2720
Arabic reference: Book 23, Hadith 2824