What is the ruling on previous prayers in which the imam was preceded in standing (qiyam) out of ignorance, and what is the ruling on stopping midway through a transition when racing the imam? And was it obligatory to return to a seated position? And how can a worshipper know the imam's speed in transitioning from standing to prostrating, especially if he cannot see him? And what should he do if he precedes the imam in standing or other actions while the imam has already begun to move?
If one precedes the Imam forgetfully or ignorantly, their prayer is not invalidated, nor are they required to repeat it. Similarly, the rak'ah is not invalidated if one joins the Imam in the rukn (pillar). If a worshipper precedes the Imam, they must return to perform what they missed while following the Imam. The principle is that a worshipper should not move until the Imam has settled in the rukn.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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