My father used to give my grandmother

Q 2: I gave my mother some of the Zakah (obligatory charity) on my wealth, as I did not know it was not permissible to give it to her and I only found out after I had given it to her. My mother is now married to a man other than my father, and she is an old woman who needs Sadaqah (voluntary charity). Should I now give out the same amount in Sadaqah as I gave to her?

A: It is obligatory on you to give out the amount that you gave to your mother to someone poor other than your mother, because it is not permissible to give Zakah money to your own mother.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.