Imam Sha’bi (may Allah have mercy on him) said: Sayyiduna Ali (may Allah be pleased with him) said regarding the son of the woman who was subjected to li’an (i.e., the boy born after li’an): Whoever leaves behind his maternal brother and mother: the maternal brother gets one-sixth and the mother gets one-third (thulth), then the remainder is divided between them, so the brother gets one-third and the mother gets two-thirds. And Sayyiduna Ibn Mas’ud (may Allah be pleased with him) said: The brother gets one-sixth and whatever remains, all of it is for the mother.
Hadith Referenceسنن دارمي / من كتاب الفرائض / 2985
Hadith Gradingتحقیق (حسین سلیم أسد الدارانی):إسناده ضعيف لضعف أبي سهل محمد بن سالم، [مكتبه الشامله نمبر: 2995]
Hadith Takhrijابوسہل محمد بن سالم کی وجہ سے یہ اثر ضعیف ہے۔ دیکھئے: [ابن أبى شيبه 11383] ، [البيهقي 258/6]