al-Husain bin Dhakwan al-Mua'lam الحسين بن ذكوان المعلم المكتب · The Book of Funerals

That the Prophet announced the death of An-Najashi to the people on the day that he died, then he took them out to the prayer place and put them in rows and offered the funeral prayer for him, saying the Takbir four times.