Prayer: Breaking Prayer for Forgotten Adhan and Iqamah
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1150
If before qirāʾah or before bowing down to the extent required for rukūʿ one remembers that he has forgotten to say adhān and iqāmah, or only iqāmah, in the event that there is ample time, it is recommended that he break his prayer to say them. In fact, if he remembers before completing his prayer that he has forgotten them, it is recommended that he break his prayer to say them.