(a) Abu al-Zubayr, who was the muezzin of Bayt al-Maqdis, said that Sayyiduna Umar (may Allah be pleased with him) said to him: When you give the iqamah, say it quickly.
(b) Al-Asma'i said: 'Al-hadhm' means 'al-hadr' (speed), that is, avoiding prolonging it.
(c) It is reported from Sayyiduna Ibn Umar (may Allah be pleased with them both) that he would give the adhan slowly and say the iqamah quickly.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2011
(a) It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "If people knew what (virtue) there is in the adhan and the first row, and then found no way (to get it) except by casting lots, they would surely cast lots for it. If they knew what virtue there is in (praying) Zuhr (early), they would race to it. And if they knew what virtue there is in Isha and the morning (prayer), they would surely come to them, even if they had to crawl." (b) Imam al-Bukhari (may Allah have mercy on him) said: It is reported that some people disagreed over giving the adhan, so Sa'd (may Allah be pleased with him) cast lots between them (to decide who would give the adhan).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2012
Ibn Shubrumah (may Allah have mercy on him) narrated to us that the people began to quarrel over giving the adhan on the battlefield of Qadisiyyah, so they took their dispute to Sayyiduna Sa'd (may Allah be pleased with him), and he cast lots between them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2013