With regard to someone who is one rakʿah behind the imam, it is better that when the imam says tashahhud of the last rakʿah, he should sit [in a squatted position] such that his fingers and the balls of his feet are on the ground and his knees are off the ground, and he should wait until the imam has said the salām of the prayer and then stand up. If at that point he wants to make an intention of performing the prayer on his own, there is no problem.
[1] For example, the imam and the follower have deemed it probable that the place where they both performed a previous prayer was usurped, and so they are now performing that prayer again as a precautionary measure. [2] In Tawḍīḥ al‑Masāʾil‑i Jāmiʿ, ‘a large step’ is defined as ‘approximately one metre’ (vol. 1, p. 484, Ruling 1710).
CONDITIONS OF THE IMAM OF CONGREGATIONAL PRAYERS LAPSED (QAḌĀʾ) PRAYERS OF A FATHER THAT ARE OBLIGATORY (WĀJIB) ON THE ELDEST SON العربية فارسی اردو English Azərbaycan Türkçe Français