It was narrated that ‘Ali bin Abu Talib said:“The Messenger of Allah (ﷺ) ruled that the sons from the same mother inherit from one another, but not sons from different mothers. A man inherits from his full brother from the same father and mother, but not his brothers from his father.”
حَدَّثَنَا يَحْيَى بْنُ حَكِيمٍ، حَدَّثَنَا أَبُو بَحْرٍ الْبَكْرَاوِيُّ، حَدَّثَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْحَارِثِ، عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ، قَالَ قَضَى رَسُولُ اللَّهِ صلى الله عليه وسلم أَنَّ أَعْيَانَ بَنِي الأُمِّ يَتَوَارَثُونَ دُونَ بَنِي الْعَلاَّتِ يَرِثُ الرَّجُلُ أَخَاهُ لأَبِيهِ وَأُمِّهِ دُونَ إِخْوَتِهِ لأَبِيهِ .
IbnMaja
Chapters on Shares of Inheritance • Hadith 2739