Muwatta Imam Malik Book of Burials, Hadith 14
Yahya related to me from Malik from Ibn Shihab from Said ibn al- Musayyab from Abu Hurayra that the Messenger of Allah ﷺ announced the death of an Najashi to everyone on the day that he died, and went out with them to the place of prayer, and then formed them into rows and said "Allah is greater" four times.
حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ﷺ نَعَى النَّجَاشِيَّ لِلنَّاسِ فِي الْيَوْمِ الَّذِي مَاتَ فِيهِ وَخَرَجَ بِهِمْ إِلَى الْمُصَلَّى فَصَفَّ بِهِمْ وَكَبَّرَ أَرْبَعَ تَكْبِيرَاتٍ .