Narrated Abu Hurairah: The Messenger of Allah ﷺ gave the people news of death of Negus on the day on which he died, took them out to the place of prayer, drew them up in rows and said: "Allah is Most Great" four times.
Hadith Referenceسنن ابي داود / كتاب الجنائز / 3204
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (1245) صحيح مسلم (951)
Narrated Abu Burdah: On the authority of his father: The Messenger of Allah ﷺ commanded us to proceed to the land of Negus. Mentioning the rest of the tradition he said that Negus said: I bear witness that he is the Messenger of Allah ﷺ, and it is he about whom Christ son of Mary gave good news. It I were not in the land which I am, I would come to him and carry his shoes.
Hadith Referenceسنن ابي داود / كتاب الجنائز / 3205
Hadith Gradingالألبانی:ضعيف الإسناد | زبیر علی زئی:ضعيف, إسناده ضعيف, أبو إسحاق عنعن, انوار الصحيفه، صفحه نمبر 118