Jābir ibn ‘Abdullāh (may Allah be pleased with him) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) said: "O Bilāl, when you call the Adhān, take your time; when you make Iqāmah, say it quickly. Leave as much time between the first and the second call as for the person who eats to finish his meal, the person who drinks to finish his drink, and the person who relieves himself to finish. And do not rise until you see me."
عن جابر بن عبدالله -رضي الله عنهما- عن النبي -صلى الله عليه وسلم- أنه قال: «يا بلال، إذا أذنت فترسَّل في أذانك، وإذا أقمت فاحدُرْ، واجعل بين أذانك وإقامتك قدر ما يفرغ الآكل من أكله، والشارب من شربه، والمعتصر إذا دخل لقضاء حاجته، ولا تقوموا حتى تروني».
شرح الحديث :
This Hadīth suggests three things to observe: to take one's time to call the Adhān well; to pronounce the Iqāmah quickly; to leave enough time between the two calls. This interval should allow people to finish eating, drinking, or relieving themselves. Also, people should not rise to pray until the Imām has come and they have seen him. This Hadīth is weak. The last sentence, however, is mentioned in the two Sahīhs. Abu Qatādah (may Allah be pleased with him) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) said: "If the [second] call to payer is made, do not rise until you see me." The beginning of the Hadīth, nevertheless, was reported by ‘Umar and his son (may Allah be pleased with both of them) and by some Tābi‘īn (generation following that of the Companions), as Ibn Abi Shaybah narrates.