Is it permissible for worshipers to stand before the muezzin begins the Iqamah, and is it true that a worshiper must follow the words of the Iqamah with the muezzin except when he says "Qad Qamati As-Salah" (the prayer has begun), at which point he should say "Aqamaha Allahu wa Adamaha" (May Allah establish it and perpetuate it), and is it obligatory to proceed to the row with tranquility and dignity? And what is incumbent upon the Imam to do before commencing the prayer?

It is not prescribed to stand for prayer before the muezzin begins the iqamah, and saying it is forbidden is contrary to what is better. Repeating the iqamah is a matter of difference of opinion: the majority consider it prescribed, while others do not, and the narration mentioned concerning it is weak, so it is not obligatory to repeat it. It is recommended to come to prayer with tranquility and dignity, and it is not recommended to rush to it even if one fears missing the opening takbeer. It is prescribed for the imam to straighten the rows before prayer, and some scholars have gone on to say that this is obligatory.