(4) باب الرَّجُلِ يَنْعَى إِلَى أَهْلِ الْمَيِّتِ بِنَفْسِهِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) informed (the people) about the death of An-Najashi on the very day he died. He went towards the Musalla (praying place) and the people stood behind him in rows. He said four Takbirs (i.e. offered the Funeral prayer).
Reference: Sahih al-Bukhari 1245
In-book reference: Book 23, Hadith 9
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 23, Hadith 337