Hadith 10:1339
Abu Bakr narrated to us, he said: Hushaym narrated to us, from Isma'il ibn Salim, from al-Sha'bi, regarding a man who had four wives, then he divorced one of them, then he died, and it was not known which one of them he had divorced. He said: Al-Sha'bi said: "For the first [three] is three-quarters of the inheritance, and for the fifth is a quarter."
حدثنا أبو بكر قال نا هشيم عن إسماعيل بن سالم عن الشعبي في رجل كن له أربع نسوة فطلق إحداهن ثم مات ولم يدر أيتهن التي طلق قال فقال الشعبي للأولى ثلاثة ارباع الميراث وللخامسة الربع