(53) باب قَدْرِ السَّجْدَةِ بَعْدَ الْوِتْرِ
It was narrated that Aishah said:
"The Messenger of Allah (ﷺ) 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.
Reference: Sunan an-Nasa'i 1749
In-book reference: Book 20, Hadith 152
English translation: Vol. 2, Book 20, Hadith 1750