How is ordinary fatḥ-tanwīn treated when pausing on «مَالًا»?

Al-Māʿūn and Al-Humazah: Applied Assimilation, Concealment, Madd and Hāʾ Rules

• Mīm becomes doubled
• Tanwīn is replaced by madd ʿiwaḍ on alif
• The tanwīn nūn stays audible
• It assimilates into wāw