Musannaf Ibn Abi Shayba 13:1963

Abu Bakr narrated to us, he said: Mu'adh ibn Mu'adh narrated to us, he said: 'Awf narrated to us, from Ziyad ibn Mikhraq, from Abu Kinana, from Abu Musa, who said: "From the glorification of Allah is honoring the Muslim person of gray hair, and the bearer of the Qur'an who neither exaggerates regarding it nor neglects it, and honoring the just ruler."