Requesting a new Ma'dhun to renew the marriage contract due to differences with the first Ma'dhun
Such a request of the concerned wife's father is impermissible and unjustified. The concerned couple does not have to respond to it. This is because the first contract is valid as all the conditions (Part No. 18; Page No. 96) of its validity and Rukns (essential elements) are met and all impediments are absent. The desire to avenge oneself, quarrels, and disputes must not be reasons for neglecting the rulings of Allah (Exalted be He). On the other hand, the concerned wife's father has to make an oath Kaffarah (expiation) for the incapability of doing what he swore to do. He is to be advised not to swear much. Allah (Exalted be He) says,
And protect your oaths (i.e. do not swear much).
And make not Allâh’s (Name) an excuse in your oaths against your doing good and acting piously
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.