Musnad Ahmad 924:12

Abdullah narrated to us, he said: And Abu Ma’mar narrated to me, Ibrahim bin Sa’d narrated to us, from Ibn Shihab, from Abu Bakr bin Abd al-Rahman, from Marwan bin al-Hakam, from Abd al-Rahman bin al-Aswad bin Abd Yaghuth, from Ubayy bin Ka’b, from the Prophet, may Allah bless him and grant him peace, and he mentioned the hadith. Abu Abd al-Rahman said: "This is how Abu Ma’mar narrated it to us from Ibrahim bin Sa’d, and he said in it: Abd al-Rahman bin al-Aswad. Abu Ma’mar differed from the narration of those who narrated it from Ibrahim bin Sa’d, because a number of people narrated it from Ibrahim bin Sa’d, and they said in it: from Abdullah bin al-Aswad."