Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) says: When al-Mada'in was conquered, the people turned towards the world, and I turned my attention to Sayyiduna Umar (may Allah be pleased with him). Most of the hadiths narrated by Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) are reported from Sayyiduna Umar (may Allah be pleased with him).
Al-Bazzar recorded it, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 732