The words of the adhaan should be said with a pause between them, while the iqaamah should be said quickly. In other words, when saying the takbeers of the adhaan, the mu’azzin should pause after every two takbeers so that those who are listening to the adhaan can repeat the words. Apart from the takbeers, he should pause after every sentence and thereafter continue with the next word. If, due to some reason, he does not pause in this way, it will be mustahab to repeat the adhaan. If the iqaamah was called out by pausing, it is not mustahab to repeat it.
When calling out adhaan, it is sunnah to turn towards the right and left when saying Hayya alas salaat and Hayya alal falaah. This is irrespective of whether the adhaan is for a salaat or for some other reason. However, his chest and feet should not turn away from the qiblah.
Adhaan and iqaamah should be called while facing the qiblah as long as he is not mounted on an animal. It is makruh-e-tanzihi to call out adhaan and iqaamah while one is not facing the qiblah.
At the time of calling out the adhaan it is necessary for the person to be pure from hadath-e-akbar (major impurity) and mustahab to be pure from both the major and minor impurities. At the time of calling out the iqaamah, it is necessary to be pure from both the impurities. If a person calls out adhaan while in a state of hadath-e-akbar, this will be makruh-e-tahrimi and it will be mustahab to repeat that adhaan. Similarly, if a person calls out iqaamah while in a state of major or minor impurity, this will be makruh-e-tahrimi but it is not mustahab to repeat the iqaamah.
It is sunnah to say the words of the adhaan and iqaamah in the sequence shown to us. If a person says a latter word first, for example, he says Ash hado anna Muhammadar Rasulullah before Ash hado an la ilaaha illa Allahu, or he says Hayya alal falaah before Hayya alas salaat; then in such a case, just the latter word should be repeated. In the first example, after saying Ash hado an la ilaaha illa Allahu he should repeat Ash hado anna Muhammadan Rasulullah. In the second example, after saying Hayya alas salaat, he should repeat Hayya alal falaah. It is not necessary to repeat the entire adhaan.
While calling out the adhaan and iqaamah, no other words should be spoken, even if they be a greeting or a reply to a greeting. If a person speaks while calling out adhaan or iqaamah and he spoke considerably, he should repeat the adhaan and not the iqaamah.