Hadith 6:621
'Abd al-A'la narrated to us, from Ma'mar, from al-Zuhri, from Sa'id ibn al-Musayyib, from Abu Hurayrah, that the Messenger of Allah (may Allah bless him and grant him peace) said: "The Negus has died." So the Messenger of Allah (may Allah bless him and grant him peace) went out to al-Baqi', and we lined up behind him, and the Messenger of Allah (may Allah bless him and grant him peace) stepped forward and pronounced four takbirs.
حدثنا عبد الأعلى عن معمر عن الزهري عن سعيد بن المسيب عن أبي هريرة أن رسول الله صلى الله عليه وسلم قال إن النجاشي قد مات فخرج رسول الله صلى الله عليه وسلم إلى البقيع وصففنا خلفه وتقدم رسول الله صلى الله عليه وسلم فكبر أربع تكبيرات