Farwah bin Nawfal (ra) narrated that: He came to the Prophet ( صلی اللہ علیہ وسلم ) and said:“O Messenger of Allah, teach me something that I may say when I go to my bed.”So he said:“Recite: Say: ‘O you disbelievers’ for verily it is a disavowal of Shirk.”Shu`bah said:“Sometimes he would say: ‘One time’ and sometime he would not say it.”(Another chain) from Farwah bin Nawfal, from his father: "That he came to the Prophet ( صلی اللہ علیہ وسلم )" then he mentioned similar in meaning. And this is more correct. [Abu `Eisa said:] And Zubair reported this hadith from Ishaq, from Farwah bin Nawfal, from his father from the Prophet ( صلی اللہ علیہ وسلم ), with similar wording. This is more appropriate and more correct than the narration of Shu`bah. The companions of Abu Ishaq were confused in the narration of this hadith. This hadith has been reported through routes other than this. `Abdur-Rahman is the brother of Farwah bin Nawfal.

Israel narrated from Abu Ishaq, and Abu Ishaq from Farwah bin Nawfal, and Farwah from his father Nawfal, that he came to the Prophet (peace and blessings of Allah be upon him), then he mentioned a hadith similar in meaning to the previous hadith. Imam Tirmidhi says:
1- And this narration is more authentic,
2- Also, Zuhair narrated this hadith from Abu Ishaq, Abu Ishaq from Farwah bin Nawfal, Farwah from his father Nawfal, and Nawfal from the Prophet (peace and blessings of Allah be upon him) in the same way, and this narration is more similar and more authentic than the narration of Shu’bah. And the companions (students) of Abu Ishaq are confused in this hadith,
3- This hadith has also come through other chains besides this chain; this hadith was also narrated by Abdur Rahman bin Nawfal from his father (Nawfal), and Nawfal from the Prophet (peace and blessings of Allah be upon him), and Abdur Rahman is the brother of Urwah bin Nawfal.