[Machine] The Messenger of Allah ﷺ said, "When you hear the caller, say what he says." Abu Abdur Rahman said: The hadith of Malik and the hadith of Abdur Rahman ibn Ishaq are incorrect, and this Abdur Rahman is called Abbad ibn Ishaq, and there is no harm in him. And Abdur Rahman ibn Ishaq is narrated by a group of the people of Kufa, and he is weak in hadith. And Allah knows best.  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «إِذَا سَمِعْتُمُ الْمُنَادِيَ فَقُولُوا مِثْلَ مَا يَقُولُ» قَالَ أَبُو عَبْدِ الرَّحْمَنِ الصَّوَابُ حَدِيثُ مَالِكٍ وَحَدِيثُ عَبْدِ الرَّحْمَنِ بْنِ إِسْحَاقَ خَطَأٌ وَعَبْدُ الرَّحْمَنِ هَذَا يُقَالُ لَهُ عَبَّادُ بْنُ إِسْحَاقَ وَهُوَ لَا بَأْسَ بِهِ وَعَبْدُ الرَّحْمَنِ بْنُ إِسْحَاقَ يَرْوِي عَنْهُ جَمَاعَةٌ مِنْ أَهْلِ الْكُوفَةِ وَهُوَ ضَعِيفُ الْحَدِيثِ وَاللهُ أَعْلَمُ