Ka’b al-Ahbar (died 32 AH) said:
“Not a day goes by without seventy thousand (70,000) angels descending upon the grave of the Prophet ﷺ, surrounding him and sending salawat upon him until night falls. When they ascend another such group of angels take their place and do the same; until when the earth splits open before him ﷺ, he comes out with seventy thousand (70,000) angels in procession around him.” 
Related to this, there is consensus among the scholars of the four madhahib (Schools of Thought) that the blessed place which contains the blessed fragrant body of Prophet Muhammad ﷺ is superior to any other place on earth.  Some (e.g. Ibn ‘Abidin al-Hanafi, Ibn ‘Aqil al-Hanbali, Salim an-Nafrawi al-Maliki) added that it is even superior than the Divine ‘Arsh.
 Recorded with Saheeh (authentic) chains to Ka’b by Darimi (Vulume 1, Page 57, Hadeeth number 94), Bayhaqi (Shu’ab, Volume 3, Page 492), Ibn al-Mubarak in Kitab az-Zuhd (Volume 1, Page 558), Abu Nu’aym in Hilya (Volume 5, Page 390), Qadi Isma’il in Fadl as-Salat (#102).
 Consensus on this is documented by:
Hanafi: Ibn ‘Abidin in Hashiya, 2:626; Tahtawi in Hashiya Maraqi Falah, p. 70.
Maliki: Qadi ‘Iyad in ash-Shifa’, 2:58; Hattab in Mawahib Jalil, 3:344-45; al-Qarafi in Dhakhira, 3:378, 381; an-Nafrawi in Fawakih Dawani, 1:45.
Shafi’i: Nawawi in Majmu’, 7:389; Ibn Kathir in al-Bidaya, 3:205; as-Suyuti in Khasa’is, 2:351; al-Munawi in Fayd Qadir, 6:264.
Hanbali: Ibn ‘Aqil (see: Subki’s Shifa’ Siqam and Ibn Qayyim’s Bada’i Fawa’id 2:147); Ibn Muflih in Mubdi’, 3:70.