Is it lawful for a Ma'dhun to conclude his own marriage contract?

Q 1: Is it permissible for a Ma'dhun (marriage registrant) to conclude his own marriage contract? Is a Ma'dhun permitted to ask for fees for concluding a marriage contract? What if the Ma'dhun is given fees without asking for them?

Firstly: It is permissible for Ma'dhun to conclude his own marriage contract if the essential elements and conditions of the validity of marriage exist and the impediments are absent. Secondly: It is permissible for Ma'dhun to take fees from the bridegroom, whether the Ma'dhun himself requests so or not, provided that the latter does not receive a salary from the government for his work. If the Ma'dhun is paid by the government, it will be impermissible for him to take fees from the bridegroom. (Part No. 18; Page No. 90) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.