Mu'aa-wiyah Radiyallahu 'Anhu once said this in the khutbah:
"Rasulullah Sallallahu 'Alayhi Wasallam passed away at the age of sixty three. (The Shaykhayn, i.e.) Abubakr Radiyallahu 'Anhu and 'Umar Radiyallahu 'Anhu also passed away at the age of sixty three years. My age (at the moment) is also sixty three".
English reference: Book 52, Hadith 363
Arabic reference: Book 53, Hadith 379