It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) gave a ruling concerning a man who left behind his daughter, his son's daughter and his sister: he assigned half to the daughter and a sixth to the son's daughter, and what remained went to the sister.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9833