that Messenger of Allah ﷺ informed them (i.e. his companions) of the death of Negus, the king of Ethiopia, on the very day on which the latter died, and said, "Ask Allah's Forgiveness for your brother"
أَنَّ أَبَا هُرَيْرَةَ ؓ أَخْبَرَهُمَا أَنَّ رَسُولَ اللَّهِ ﷺ نَعَى لَهُمُ النَّجَاشِيَّ صَاحِبَ الْحَبَشَةِ فِي الْيَوْمِ الَّذِي مَاتَ فِيهِ وَقَالَ اسْتَغْفِرُوا لأَخِيكُمْ