I heard the Messenger of Allah ﷺ say: I am the heirs of Him who has none, freeing him from his liabilities, and inheriting what he possesses. A maternal uncle is the heir of Him who has none, freeing him from his liabilities, and inheriting his property. (Using translation from Abū Dāʾūd 2901)
قَالَ رَسُولُ اللَّهِ ﷺ «أَنَا مَوْلَى مَنْ لَا مَوْلَى لَهُ أَرِثُ مَالَهُ وَأَفُكُّ عَانِيَهُ وَالْخَالُ وَارِثُ مَنْ لَا وَارِثَ لَهُ يَرِثُ مَالَهُ وَيَفُكُّ عَانِيَهُ»