Laylàbint Abë Murrah ibn ÿUrwah ibn MasÃ¿à «d al-Thaqafë (), also known as Umm Laylà(), was a wife of Husayn ibn Ali and the mother of Ali al-Akbar and Fatima al-Sughra. She was the niece of Mu'awiya ibn Abi Sufyan. Her grandfather Urwah ibn Mas'ud was considered by Muhammad as one of the four chiefs of Islam.