Taking money from your Father without His permission..
Question:
If my father gives me money to buy things, and then some of that money remains, can I keep the remainig sum without telling him? And are we allowed to ask Allah Almighty to have mercy upon a deceased person who was wicked,but was still a muslim?
Answer:
The extra that remains from what your father entrusted you with to purchase something he needed is not for you to take. Rather it is obligatory for you to return this to your father because that is part of fulfilling the trust that is ordered in the saying of Allah Almighty: Verily! Allah commands that you should render back the trust to those, to whom they are due. And yes, you can ask Allah Almighty to have mercy on such a person and to pardon and forgive him. You can also pray the funeral prayer for him, with the condition that he is not a disbeliever, but only a wiked peson.
Source:
Shaykh `Abdul-`Azeez Bin Baz
Fatawa Islamiyah Darussalam VOL:8 no.333