Musannaf Ibn Abi Shaybah 32204 — The Muawwidhatayn

Zirr said: I asked Sayyiduna Ubayy (may Allah be pleased with him): "Sayyiduna Ibn Mas'ud (may Allah be pleased with him) does not write the Mu'awwidhatayn in the mushaf." He said: "I asked the Prophet (peace and blessings be upon him) about these two surahs, and he (peace and blessings be upon him) said: 'It was said to me, so I said it.'" Then Sayyiduna Ubayy (may Allah be pleased with him) said: "So we say just as it has been said to us."