It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that he said: Something which you will find neither in the Book of Allah nor in an explicit ruling of the Messenger of Allah (peace and blessings be upon him), but you will find it among all the people (in their practice), is this: for the daughter is half (1/2), and for the sister is also half (1/2). This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from al-Aswad bin Yazid that Sayyiduna Ibn al-Zubayr (may Allah be pleased with him) used to say regarding the inheritance of a daughter and a sister: "All the wealth belongs to the daughter." So I said: Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) gave a ruling among us in Yemen that for the daughter is half (1/2) and for the sister is half (1/2). Ibn al-Zubayr (may Allah be pleased with him) said: "Go on my behalf to al-Walid bin Utbah (who was then the judge of Kufah) and order him to act according to that (ruling of Mu'adh, may Allah be pleased with him)." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.