It was narrated that ‘Aishah said: “The Messenger of Allah صلی اللہ علیہ وآلہ وسلم used to pray eleven Rak’ahs at night between finishing ‘Isha’ prayer and Fajr, apart from the two Rak’ahs of Fajr, and he would prostrate for as long as it takes one of you to recite fifty verses. (Sahih)