Abdullah ibn Umar
While many Companions narrated hadith, according to Ahmad ibn Hanbal there were six who were the most prolific narrators of them, who lived long lives enabling them narrate to a large extent. They were: Abu Huraira, Abdullah ibn Umar, Aisha, Jabir ibn Abdullah, Ibn Abbas and Anas ibn Malik with Abu Huraira being the most prolific of them. According to Ibn al-Salah the most prolific narrators from the Companions was Abu Huraira followed by Ibn Abbas.