[Machine] He used to speak to Muawiya and the muadhin (caller to prayer) made the call to prayer, so he ordered him to listen, then he said the takbeer (God is the greatest) as he said it. Then the muadhin said, "I bear witness that there is no god but Allah," and he said, "And we bear witness that there is no god but Allah." The muadhin said, "I bear witness that Muhammad is the Messenger of Allah," and he said, "And we bear witness that Muhammad is the Messenger of Allah." Ibn Hubayrah said, "So I said to him, 'Did you see anything or hear it from the Messenger of Allah, ﷺ ?' He said, 'I heard the Messenger of Allah, ﷺ , say takbeer when he heard the muadhin, so when he said, 'I bear witness that there is no god but Allah,' he said, 'And I bear witness that there is no god but Allah.' And when he said, 'I bear witness that Muhammad is the Messenger of Allah,' he said, 'And I bear witness that I am the Messenger of Allah.'"  

أَنَّهُ كَانَ يُكَلِّمُ مُعَاوِيَةَ وَأَذَّنَ الْمُؤَذِّنُ فَأَمَرَهُ أَنْ يُنْصِتَ ثُمَّ كَبَّرَ كَمَا كَبَّرَ ثُمَّ قَالَ الْمُؤَذِّنُ أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللهُ فَقَالَ وَنَحْنُ نَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللهُ قَالَ الْمُؤَذِّنُ أَشْهَدُ أَنَّ مُحَمَّدًا رَسُولُ اللهِ فَقَالَ وَنَحْنُ نَشْهَدُ أَنَّ مُحَمَّدًا رَسُولُ اللهِ قَالَ ابْنُ هُبَيْرَةَ فَقُلْتُ لَهُ أَشَيْءٌ رَأَيْتَهُ أَمْ سَمِعْتَهُ مِنْ رَسُولِ اللهِ ﷺ؟ فَقَالَ سَمِعْتُ رَسُولَ اللهِ ﷺ كَبَّرَ حِينَ سَمِعَ الْمُؤَذِّنَ فَإِذَا قَالَ أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللهُ قَالَ «وَأَنَا أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللهُ» وَإِذَا قَالَ أَشْهَدُ أَنَّ مُحَمَّدًا رَسُولُ اللهِ قَالَ «وَأَنَا أَشْهَدُ أَنِّي رَسُولُ اللهِ»