Sahih Bukhari Volume 8, Book 80, Hadith Number 726.

Narrated By Al-Aswad bin Yazid: Mu’adh bin Jabal came to us in Yemen as a tutor and a ruler, and we (the people of Yemen) asked him about (the distribution of the property of) a man who had died leaving a daughter and a sister. Mu’adh gave the daughter one-half of the property and gave the sister the other half.