Form I, Fāza, To be Successful, To be Victorious, To Triumph. Form II, Fawwaza, To Cross the Desert.
-Wehr
Form II verbs (formed by doubling the middle consonant of the triliteral root) give an Intensive or Causative meaning to Form I verbs, such as, Form I, To Break, Form II, To Smash, or Form I, To Enter, Form II, To Bring Inside. So the fact that the verb Fāza (with its middle consonant W, one of Arabic’s “weak letters”, disappearing in Form I) when Intensified means this says much about KhairAllah’s good fortune crossing the desert, or perhaps Causatively, what made him do it at all.