It was narrated that Musa bin Talhah said:
We were with Mu'awiyah and he said: "I heard the Messenger of Allah say: 'Talhah is one of those who fulfilled their covenant.'" (ID)
English reference (ID): Vol. 1, Book 1, Hadith 127 (ID)
Arabic reference (ID): Book 1, Hadith 132 (ID)