Sayyiduna Amr bin Harith (may Allah be pleased with him) narrates: I performed the Fajr prayer behind the Prophet Muhammad (peace and blessings be upon him). I heard him reciting this verse: «فَلَا أُقْسِمُ بِالْخُنَّسِ الْجَوَارِ الْكُنَّسِ» . The narrator says: None of us would bend our backs (for prostration) until the Prophet Muhammad (peace and blessings be upon him) had completely gone into prostration.