Ya'laa bin Mamlak Radiyallahu 'Anhu says:
"He asked Ummul Mu'mineen Sayyiditina Ummi Salamah Radiyallahu 'Anha about the recital of Rasulullah Sallallahu 'Alayhi Wasallam". She replied: "He recited every word separately and clearly". (TR)
English reference (TR): Book 43, Hadith 297 (TR)
Arabic reference (TR): Book 44, Hadith 314 (TR)