They ask you for a legal verdict. Say: Allah directs (thus) about Al-Kalal,a (those who leave neither descendants nor ascendants as heirs). If it is a man that dies, leaving a sister, but no child, she shall have half the inheritance. If (such a deceased was) a woman who left no child, her brother takes her inheritance... (V.4:176)

Hadith Number 4605

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Narrated Al-Bara

The last Sura that was revealed was Bara'a, and the last Verse that was revealed was: "They ask you for a legal verdict, Say: Allah's directs (thus) about those who leave no descendants or ascendants as heirs." (4.176)