It was narrated that Abu Sa'eed Al-Khudri said:
"The Messenger of Allah said: 'The people of the highest degrees of Paradise will be seen by those beneath them as a rising star is seen on the horizon. Abu Bakr and 'Umar will be among them, and how blessed they are!'" (ID)
English reference (ID): Vol. 1, Book 1, Hadith 96 (ID)
Arabic reference (ID): Book 1, Hadith 101 (ID)