It was narrated from Abu Hurairah:
“The Messenger of Allah ﷺ said: ‘Najashi has died.’ The Messenger of Allah ﷺ and his Companions went out to Al-Baqi’, and we lined up in rows behind him, and the Messenger of Allah ﷺ went forward, then he said four Takbir.”

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَبْدُ الأَعْلَى، عَنْ مَعْمَرٍ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " إِنَّ النَّجَاشِيَّ قَدْ مَاتَ " . فَخَرَجَ رَسُولُ اللَّهِ ﷺ وَأَصْحَابُهُ إِلَى الْبَقِيعِ . فَصَفَّنَا خَلْفَهُ وَتَقَدَّمَ رَسُولُ اللَّهِ ﷺ فَكَبَّرَ أَرْبَعَ تَكْبِيرَاتٍ .