Monib married into the Al-Husseini family, which got him expelled as a Covenant-breaker.

Jamal Husseini was a relative of the Mufti of Jerusalem, an ardent enemy of the Faith. Monib was, I believe, one of the Guardian's cousins, and a grandchild of the Master, who had married into the Al-Husseini family, which got him expelled as a Covenant-breaker. Brent [Poirier]

"On the 23rd, the day after the battle for Haifa, Dr. Weinshall [the Guardian's lawyer] phoned me and asked how we were? I said we were all well and keeping at home. He said 'I hope you are not leaving?' I said of course not, we have no intention of leaving, why should we leave? He said no reason on earth, he was glad to hear it. Then I said, we know the Jews and the Jews know us, we have nothing to fear from them. He said that was certainly true and that all had the greatest respect for us. He also asked if any of our servants were leaving and I said no, of course not. Then after a little mutual exchange of thought on how foolish the mass exodus of the Arabs was he asked me to give his very kindest regards to Shoghi Effendi. When the Guardian heard this he told me to go and thank him and tell him he felt he wanted him to know something for his own information and then I told him all about Monib's marriage to Jamal Husseini's daughter, etc. He was very surprised and wrote down his and Hassan's name." (Ruhiyyih Khanum, The Priceless Pearl, p. 169)

https://groups.io/g/Bahai/topic/excerpt_from_ruhiyyih/49500437