"Before he died, the Messenger of Allah ﷺ had written to Kisra, Ceasar, An-Najashi, and to every tyrant calling them to Allah. This An-Najashi is not the one that the Prophet ﷺ performed to the funeral Salat for."
أَنَّ رَسُولَ اللَّهِ ﷺ كَتَبَ قَبْلَ مَوْتِهِ إِلَى كِسْرَى وَإِلَى قَيْصَرَ وَإِلَى النَّجَاشِيِّ وَإِلَى كُلِّ جَبَّارٍ يَدْعُوهُمْ إِلَى اللَّهِ وَلَيْسَ بِالنَّجَاشِيِّ الَّذِي صَلَّى عَلَيْهِ النَّبِيُّ ﷺ
It has been narrated on the authority of Anas that the Prophet of Allah ﷺ wrote to Chosroes (King of Persia), Caesar (Emperor of Rome), Negus (King of Abyssinia) and every (other) despot inviting them to Allah, the Exalted. And this Negus was not the one for whom the Messenger of Allah ﷺ had said the funeral prayers.
أَنَّ نَبِيَّ اللَّهِ ﷺ كَتَبَ إِلَى كِسْرَى وَإِلَى قَيْصَرَ وَإِلَى النَّجَاشِيِّ وَإِلَى كُلِّ جَبَّارٍ يَدْعُوهُمْ إِلَى اللَّهِ تَعَالَى وَلَيْسَ بِالنَّجَاشِيِّ الَّذِي صَلَّى عَلَيْهِ النَّبِيُّ ﷺ
"Before he died, the Messenger of Allah ﷺ had written to Kisra, Ceasar, An-Najashi, and to every tyrant calling them to Allah. This An-Najashi is not the one that the Prophet ﷺ performed to the funeral Salat for." (Using translation from Tirmidhī 2716)
أَنَّ رَسُولَ اللهِ ﷺ كَتَبَ قَبْلَ مَوْتِهِ إِلَى كِسْرَى وَإِلَى قَيْصَرَ وَإِلَى النَّجَاشِيِّ وَإِلَى كُلِّ جُبَارٍ يَدْعُوهُمْ إِلَى اللهِ تَعَالَى لَيْسَ النَّجَاشِيُّ الَّذِي صَلَّى عَلَيْهِ رَسُولُ اللهِ ﷺ