Musnad Ahmad 30:658

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from Ibn al-Musayyib and Abu Salamah ibn 'Abd al-Rahman, from Abu Hurayrah, who said: "The Messenger of Allah (peace and blessings of Allah be upon him) announced the death of al-Najashi to his companions while he was in Medina. They lined up behind him, and he prayed over him and said the takbir four times."