Musnad Ahmad

Hajjaj narrated to us, Sharik narrated to us, from Abu Ishaq, from Farwah ibn Nawfal, from Al-Harith ibn Jablah, who said: I said, "O Messenger of Allah, teach me something to say when I go to bed." He said: "When you take your bed at night, recite 'Say: O disbelievers' (__QUR_N__), for it is a declaration of innocence from shirk (associating partners with Allah)."

And it was narrated to us by Aswad, who narrated to us from Sharik, who said: Jabalah, and he did not doubt.

He said: ʿAlī, meaning Ibn al-Madīnī, said: Jabalāh ibn al-Ḥārith al-Kalbī. ʿAlī said: I heard it from Ibn Abī al-Wazīr. ʿAbdullāh ibn Aḥmad said: And my father narrated to us, from ʿAlī, before he was tested regarding the Qur'an.