Al-Sha'bi (may Allah have mercy on him) said: (The case of) a man who had died was brought to Ziyad, and he had left (as heirs) a paternal aunt and a maternal aunt. He said: Do you know how Sayyiduna Umar (may Allah be pleased with him) judged in this matter? They said: No. Ziyad said: I am the most knowledgeable of people about Sayyiduna Umar's (may Allah be pleased with him) judgement. He placed the paternal aunt in the position of a brother and the maternal aunt in the position of a sister, so he gave the paternal aunt two-thirds and the maternal aunt one-third.
Al-Hasan, Jabir bin Zayd, Bakr bin Abdullah al-Muzani and others narrated that Umar (may Allah be pleased with him) gave the paternal aunt two-thirds and the maternal aunt one-third. All of these are mursal (marasil), and the narration of the people of Madinah from Umar is more worthy of being authentic, and Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الفرائض / 12220