Mukhtasar Bukhari

Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) says: I asked the Messenger of Allah (peace and blessings of Allah be upon him) about the Mu'awwidhatayn (the last two Surahs of the Qur'an), so he (peace be upon him) said: "These two Surahs have been taught to me (by Jibreel, peace be upon him); I say that they are from the Qur'an." (Sayyiduna Ubayy, may Allah be pleased with him, says:) We also say what the Messenger of Allah (peace and blessings of Allah be upon him) said.