Touching the mihraab and the minbar of the Prophet’s Masjid

Reference: al-Bid’u wal-Muhdathaat wa maa laa asla lahu – Page 403

Question: What is the ruling regarding touching the mihraab and the minbar of the al-Masjid an-Nabawee?

Response: Some of the visitors touch the mihraab and the minbar and the walls of the al-Masjid an-Nabawee and all of this is an innovation.