Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates: The Prophet (peace and blessings be upon him) did not appoint any judge, nor did Sayyiduna Abu Bakr (may Allah be pleased with him), nor did Sayyiduna Umar (may Allah be pleased with him), except that in the last period of his caliphate he said to Yazid, the sister's son of Yumn: "Relieve me of some matters," meaning, settle the minor matters yourself.
Abu Ya'la recorded it, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأحكام / 7008