The Excellence of the Adhan and the Response to the Mu’adhdhin - Section 2 Mishkat al-Masabih 671
Arabic hadith text
وَعَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يُرَدُّ الدُّعَاءُ بَيْنَ الْأَذَان وَالْإِقَامَة» . رَوَاهُ أَبُو دَاوُد وَالتِّرْمِذِيّ
Translation
Anas reported God’s Messenger as saying, “A supplication made between the adhan and the iqama is not rejected.” Abu Dawud and Tirmidhi transmitted it.