It was narrated that 'Abdullah bin Salimah said:
"I heard 'Ali say: 'The best of people after the Messenger of Allah is Abu Bakr, and the best of people after Abu Bakr is 'Umar.'" (ES)
English reference (ES): Vol. 1, Book 1, Hadith 106 (ES)
Arabic reference (ES): Book 1, Hadith 111 (ES)