Abu Salamah (may Allah have mercy on him) said: Whenever Sayyiduna Umar (may Allah be pleased with him) sat with Sayyiduna Abu Musa al-Ash'ari (may Allah be pleased with him), he would say to him: O Abu Musa, remind us! And he would recite the Qur'an to him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21055