عَنْ مُعَاوِيَةَ قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «الْمُؤَذِّنُونَ أَطْوَلُ النَّاسِ أعناقا يَوْم الْقِيَامَة» . رَوَاهُ مُسلم

‘Abdallah b. Mughaffal reported God’s Messenger as saying, “Between every pair of adhans there is a prayer; between every pair of adhans there is a prayer.” Then he said on repeating it a third time, “for him who wishes.” (Bukhari and Muslim.)