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  • English_Boxer_Muhammad_Ali_Prayer_Book, page : 207

The Iqamah156 is to be made to the assembled congregation just
before the Imam begins the congregational prayer. After the
Mu'adhdhin has made the Adhan there should be an interval
before the Iqamah is announced, during which time a Muslim
prepares for the prayer service.157 The interval between these two
calls should allow the followers at least sufficient time to finish a
meal (if they are eating), make ablution, go to the masjid and per-
form sunnah prayer.

The sentences of the Adhan are delivered in a leisurely
manner,158 while the delivery of the Iqamah is marked by quick-
ness. The Iqamah is also pronounced in a comparatively lower
tone of voice. The person who makes the Adhan is generally the
one who announces the Iqamah, however it is acceptable for
someone else to make the Iqamah. The Iqamah is said as follows:
Allah is The Greatest, Allah is The Greatest.

I bear witness that there is no god except Allah.