It seems first that the Ghassanid Monophysite Church entered a brief union with Heraclius at this time.
Skirmishes between Tachkastan's Arabs and the Zoroastrian-ruled Ghassanids seem to have taken place with the battle of [https://en.wikipedia.org/wiki/Mu%27tah Mu'tah, Jordan], in September 629 and again at Al Karak in 630 as Heraclius made his way to recapture the Holy Land.
