Musannaf Ibn Abi Shaybah 34647 — The virtue of the Arabs

Khulayd al-Asri (may Allah have mercy on him) said: When Sayyiduna Salman (may Allah be pleased with him) came to us, we went to him so that we could read the Qur'an from him. He (may Allah be pleased with him) said: "Indeed, the Qur'an is Arabic, so read it from an Arab." So Zayd bin Suhan (may Allah have mercy on him) used to teach us to read. When he made a mistake, Sayyiduna Salman (may Allah be pleased with him) would catch him on the mistake, and when he got it right, he (may Allah be pleased with him) would say: "By Allah! That is how it is."