All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and messenger.
In regard to the first question, we have already clarified in Fataawa 84056 and 84808 that a son is not obliged to obey his parents in divorcing his wife without a legitimate reason. We are not aware of any Hadeeth stating the obligation of obeying the mother if she orders her son to divorce his wife.
However, it is narrated that Ibn ‘Umar said: “I had a wife whom I loved but my father hated. He ordered me to divorce her, and I refused. I mentioned that to the Prophet who said to me: “O Abdullaah ibn 'Umar! Divorce your wife." [At-Tirmithi]
Nonetheless, this – we mean the obligation of obedience in this case – is contingent on the righteousness of the father who is most likely not susceptible to be driven by unjustifiable inclinations in ordering his son to divorce his wife. Ibn Al-‘Arabi said in his commentary on At-Tirmithi (‘Aaridhat Al-Ahwathi): “The first to command his son to divorce his wife was Ibraaheem (Abraham) and he is a sufficient example. Part of a son's dutifulness to his father is to hate whomever his father hates even if he himself loves that person especially if the father is religious and righteous, loves for the sake of Allaah and hates for His sake, and does not do so just out of following his desires.... Even if this is not the case, it is still desirable for the son to divorce his wife in order to please the father, but he is not obliged to do so as he is obliged in the first case [i.e. the father is righteous]; that is because the obedience of the father in what is right is part of obedience to Allaah, and being kind and dutiful to him is part of being kind and dutiful to Allaah.” [End of quote]
As regards the second question, if fundraising takes place during the Khutbah, then this is not permissible as this disturbs the worshippers, and listening to the Friday Khutbah is an obligation, so it is not permissible for a Muslim to be preoccupied with anything other than that. For more information, please refer to Fatwa 41764.