Musannaf Ibn Abi Shaybah 32260 — Those who said: keep the Quran

Abu al-Mughirah said: A man recited the Qur'an in the presence of Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), and he said: "I seek refuge in the All-Hearing, the All-Knowing from the accursed Satan." So he (Ibn Mas'ud) said: "Keep the Qur'an free of other things."