Sahih al-Bukhari 624
Sahih al-Bukhari · Book 10: Call to Prayers (Adhaan) · How long should the interval between the Adhan and the Iqama be? (And something concerning) the person who wants for the Iqama
Narrated `Abdullah bin Mughaffal Al-Muzani:
حَدَّثَنَا إِسْحَاقُ الْوَاسِطِيُّ ، قَالَ حَدَّثَنَا خَالِدٌ ، عَنِ الْجُرَيْرِيِّ ، عَنِ ابْنِ بُرَيْدَةَ ، عَنْ عَبْدِ اللَّهِ بْنِ مُغَفَّلٍ الْمُزَنِيِّ ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " بَيْنَ كُلِّ أَذَانَيْنِ صَلاَةٌ ـ ثَلاَثًا ـ لِمَنْ شَاءَ " .
Allah's Messenger (ﷺ) said thrice, "There is a prayer between the two Adhans (Adhan and Iqama)," and added, "For the one who wants to pray."