Sunan Abi Dawud 521
سنن أبي داود#521Sahihحَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، أَخْبَرَنَا سُفْيَانُ، عَنْ زَيْدٍ الْعَمِّيِّ، عَنْ أَبِي إِيَاسٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ يُرَدُّ الدُّعَاءُ بَيْنَ الأَذَانِ وَالإِقَامَةِ " .
Narrated Anas ibn Malik: The supplication made between the adhan and the iqamah is not rejected
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih
In-book reference: 2:131