Sahih Al Bukhari Hadith Number 1327

Narrated Abu Huraira: Allah’s Messenger (peace be upon him) informed about the news of the death of An-Najash (King of Ethiopia) on the day he expired. He said, “Ask Allah’s forgiveness for your brother. ” Narrated Abu Huraira: The Prophet (peace be upon him) made them align in rows at the Musalla and said four Takbir.

23  Funerals (Al-Janaa’iz)
Hadith number 1327
Volume no 2
Chapter: 60 (To offer the funeral Salat (prayer) at the Musalla and at the Mosque)