Abbas bin Muhammad bin Hatm عباس بن محمد بن حاتم · Chapters On Inheritance

"'Umar bin Al-Khattab sent me with a letter to Abu'Ubaidah (saying) that The Messenger of Allah(S.A.W) said : 'Allah and His Messenger are responsible for the one who has no patron. And the maternal uncle inherits from the one who has no heirs.'"