Musnad Ahmad 30:1280

Muhammad ibn Bishr narrated to us, Muhammad ibn ‘Amr narrated to us, Abu Salamah narrated to us, from Abu Hurairah, who said: There were two men from Bali, a clan of Quda‘ah, who accepted Islam with the Prophet, may Allah bless him and grant him peace. One of them was martyred, and the other remained for a year. Talhah ibn ‘Ubaidullah said: I was shown Paradise, and I saw the one who remained behind the other enter before the martyr. I was amazed by that. When morning came, I mentioned that to the Prophet, may Allah bless him and grant him peace—or it was mentioned to the Messenger of Allah, may Allah bless him and grant him peace. The Messenger of Allah, may Allah bless him and grant him peace, said: "Has he not fasted Ramadan after him, and prayed six thousand rak'ahs, or such and such number of rak'ahs of the sunnah prayer?"