Narrated Ibn 'Abbas (RA): The Prophet ( صلی اللہ علیہ وسلم ) returned his daughter Zainab (RA) to [her husband] Abul-'Aas bin ar-Rabi' (RA) based upon the first marriage, after six years (of separation), and he did not perform a new marriage. [Reported by Ahmad and al-Arba'a except an-Nasa'i. Ahmad and al-Hakim graded it Sahih (authentic)] .