´It was narrated that Abu Hurairah said:` "Abu Bakr and Umar prostrated during: 'When the heaven is split asunder,' as did the one who was better than them (the Prophet (ﷺ)). "
Hadith ReferenceSunan an-Nasa'i / 0 / Hadith: 966
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح