All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
By you simply falling in the mall and being injured because of that, it does not necessarily follow that the mall is obligated to compensate you for that if it did not cause the harm that occurred to you.
Under the assumption that you have the right to compensation from the mall or that this is a donation from it, it is permissible for you to take it either from the insurance company of the mall or from another insurance company to which it referred to pay it.