It is narrated from Sayyiduna Zayd bin Thabit (may Allah be pleased with him) that he told Sayyiduna Umar (may Allah be pleased with him): "The Messenger of Allah (peace and blessings be upon him) gave the grandfather one sixth of the estate when there was a male child, half when there was one brother, and one third in the case of two or more brothers; and if the deceased had no heir other than the grandfather, he (peace and blessings be upon him) would give him the entire wealth."
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب الوصايا / 1532
Hadith Gradingمحدثین:إسناده ضعيف جدًا
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده ضعيف جدًا. » «أخرجه سنن سعيد بن منصور برقم: 39، وأخرجه السنن الكبرى للبيهقي برقم: 12557، وأخرجه مصنف عبد الرزاق برقم: 19058»