وَإِذَا فَرَغَ مِنْ خُطْبَتِهِ: أَقَامُوا الصَّلَاةَ.
Translation: When the imam finishes the sermon, the iqamah is given for the prayer.
The sequence is adhan, khutbah, iqamah, then the two Friday rak‘ahs. The iqamah marks the immediate commencement of the congregational prayer, recited aloud by the imam.