a palindromic function phrase in Middle Persian

/hēb bēh/ "may it be!"

as in Šābuhragān 325-326 (ed. MacKenzie)
/(kū-)tān nēw dēbag abar amāh hēb bēh/
"May your good fortune be upon us!"

/hēb/ is an optative particle (used w/ both opt and ind), and /bēh/ is opt 3s /baw-, būd/ "be"