You should not accept the condition which your father stipulated; that you should dismiss your mother out of your house to give you the money needed for your marriage. This is a kind of undutifulness to (Part No. 25; Page No. 245) your mother. The Prophet (peace be upon him) said,
there should be no obedience to a creature leading to disobeying the Creator.
Allah will provide for you with that which is better if you remain benevolent to your mother, for Allah (Glorified be He) says,
And whosoever fears Allâh and keeps his duty to Him, He will make a way for him to get out (from every difficulty).
And He will provide him from (sources) he never could imagine.
Surah Al-Talaq.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.