(27) باب كُتُبِ النَّبِيِّ صلى الله عليه وسلم إِلَى مُلُوكِ الْكُفَّارِ يَدْعُوهُمْ إِلَى اللَّهِ عَزَّ وَجَلَّ
The tradition has been narrated on the authority of Anas b. Malik (the same narrator) through a different chain of transmitters, but this version does not mention:
" And he was not the Negus for whom the Prophet (ﷺ) had said the funeral prayers."
Reference: Sahih Muslim 1774 b
In-book reference: Book 32, Hadith 92
USC-MSA web (English) reference(deprecated numbering scheme): Book 19, Hadith 4383