When should the Muqtadi change postures?
Q: When should the muqtadi start to change posture in salat (e.g. from qiyam to sajdah): should he start moving immediately when the imam starts saying "Allahu akbar" or should he wait until the imam has completed saying the whole phrase "Allahu akbar"? Or should he, if he can see the imam, wait until the imam has totally completed his change of posture.