"The Messenger of Allah said: 'When the Mu'adh-dhin calls the Adhan, say as he says.'"
قَالَ رَسُولُ اللَّهِ ﷺ إِذَا أَذَّنَ الْمُؤَذِّنُ فَقُولُوا مِثْلَ قَوْلِهِ
[Machine] I heard the Prophet ﷺ saying, "When the Mu'adhin calls the Adhan, say what he says."
سَمِعْتُ النَّبِيَّ ﷺ إِذَا أَذَّنَ الْمُؤَذِّنُقَالَ مِثْلَ مَا يَقُولُ
When you hear the Adhan, you should repeat the same words as the mu’adhdhin pronounces. (Using translation from Abū Dāʾūd 522)
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «إِذَا سَمِعْتُمُ الْمُؤَذِّنَ فَقُولُوا مِثْلَ مَا يَقُولُ»
"The Messenger of Allah said: 'When the Mu'adh-dhin calls the Adhan, say as he says.'" (Using translation from Ibn Mājah 718)
"إذا أذَّن المؤذِّن فقولوا مثلَ قولهِ".