Volume 5, Book 59, Number 328:
Narrated Mu’adh bin Rifa’a bin Rafi:
Rifa’a was one of the warriors of Badr while (his father) Rafi’ was one of the people of Al-‘Aqaba
(i.e. those who gave the pledge of allegiance at Al-‘Aqaba). Rafi’ used to say to his son, “I would not
have been happier if I had taken part in the Badr battle instead of taking part in the ‘Aqaba pledge.”