Mirza Muhammad-`Ali's opposition to the Centre of the Covenant, has cost him the loss of the right to succeed Baha'u'llah

Equally unaware were the believers that Shoghi Effendi was the distinguished Branch appointed by `Abdu’l-Baha to lead the Baha’i world after Him. Mirza Muhammad-`Ali, whose opposition to the Centre of the Covenant, had cost him the loss of the right to succeed Him, was hard at work to present himself as the leader of the Baha’i community.

The Greatest Holy Leaf’s Unparalleled Role in Religious History and the Significance of the Arc, the Site of Her Resting Place by Baharieh Rouhani Ma`ani

https://bahai-library.com/maani_holy_leaf_role