What will a persons last name be in Paradise according to Islam?

I have heard in Paradise people will have their mothers last name e.g. Husseyn Bahja Aisha Khadija, instead of Husseyn Ryan Axmed Ali. For some reason I have been unable to find anything using Google, blaming my bad searching skills for now, but is it even true, do we keep our current last names, which is our fathers or do we use our mothers last name?