Sunan al-Nasa'i
The Book of the Adhan (The Call to Prayer) — Hadith #683
أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، عَنْ يَحْيَى، عَنْ كَهْمَسٍ، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ بُرَيْدَةَ، عَنْ عَبْدِ اللَّهِ بْنِ مُغَفَّلٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" بَيْنَ كُلِّ أَذَانَيْنِ صَلاَةٌ بَيْنَ كُلِّ أَذَانَيْنِ صَلاَةٌ بَيْنَ كُلِّ أَذَانَيْنِ صَلاَةٌ لِمَنْ شَاءَ " .
“The Messenger of Allah (S.A.W) said: ‘Between each two Adhans there is a prayer, between each two Adhans there is a prayer, between each two Adhans there is a prayer, for whoever wants to do it.”
Meaning, between the Adhan and Iqamah.
Chain of Narration (Isnad)