Narrated 'Amir: Ibn Abbas (who was at that time a boy) said, "Allah's Apostle came to a grave and the people said, 'He or she was buried yesterday.' " Ibn Abbas added, "We aligned behind the Prophet and he led the funeral prayer of the deceased."
— Sahih Bukhari, Volume 2, Book 23: Funerals (Al-Janaa'iz), Hadith #411
