Narrated Abu Huraira
The Prophet (p.b.u.h) informed his companions about the death of An-Najashi and then he went ahead (to lead the prayer) and the people lined up behind him in rows and he said four Takbir.
Narrated Ash-Shaibani
Ash Shu`bi said, "I was informed by a man who had seen the Prophet (ﷺ) going to a grave that was separate from the other graves and he aligned the people in rows and said four Takbir." I said, "O Abu `Amr! who narrated (that) to you"? He said, "Ibn `Abbas. "
Narrated Jabir bin `Abdullah
The Prophet (ﷺ) said, "Today a pious man from Ethiopia (i.e. An Najashi) has expired, come on to offer the funeral prayer." (Jabir said): We lined up in rows and after that the Prophet (ﷺ) led the prayer and we were in rows. Jabir added, I was in the second row."