(52) باب السُّجُودِ فِي { اقْرَأْ بِاسْمِ رَبِّكَ }
It was narrated that Abu Hurairah said:
"Abu Bakr and Umar, may Allah be pleased with them both, and the one who was better than them prostrated during 'When the heaven is split asunder' and 'Read! In the name of your Lord.'"
Reference: Sunan an-Nasa'i 966
In-book reference: Book 11, Hadith 91
English translation: Vol. 2, Book 11, Hadith 967