"Abu Bakr and Umar prostrated during: 'When the heaven is split asunder,' as did the one who was better than them (the Prophet (ﷺ)). "
Sunan an-Nasa'i Book 11, Hadith 90
← Previous Hadith (Another chain) from Abu Hurairah, with similar.

Sunan an-Nasa'i Book 11, Hadith 89 Next Hadith → "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.'"

Sunan an-Nasa'i Book 11, Hadith 91