[Machine] I heard Jabir saying, "Muadh used to pray with the Messenger of Allah ﷺ , then he would return and lead his people in prayer. One night, he led them in the Isha prayer and recited Surah Al-Baqarah. A man made a prolonged bow and then left. Muadh criticized him for that, and this incident was conveyed to the Prophet ﷺ . He said, "Ruination, ruination, or he said, 'misguidance, misguidance, misguidance.' Then he ordered him to recite two middle Surahs from Al-Mufassal." Umar said, "I do not remember which two Surahs they were."  

سَمِعْتُ جَابِرًا يَقُولُ كَانَ مُعَاذٌ يُصَلِّي مَعَ رَسُولِ اللهِ ﷺ ثُمَّ يَرْجِعُ فَيَؤُمُّ قَوْمَهُ قَالَ فَصَلَّى بِهِمْ مَرَّةً الْعِشَاءَ فَقَرَأَ سُورَةَ الْبَقَرَةِ فَعَمَدَ رَجُلٌ فَانْصَرَفَ فَكَانَ مُعَاذٌ يَنَالُ مِنْهُ فَبَلَغَ ذَلِكَ النَّبِيَّ ﷺ فَقَالَ فَتَّانٌ فَتَّانٌ أَوْ قَالَ فَاتِنٌ فَاتِنٌ فَاتِنٌ وَأَمَرَهُ بِسُورَتَيْنِ مِنْ أَوْسَطِ الْمُفَصَّلِ قَالَ عَمْرٌو لَا أَحْفَظُهُمَا  

[Machine] Muadh used to pray with the Messenger of Allah ﷺ and then go to his people and lead them in prayer. One night, he prayed the 'Isha prayer and recited Surah Al-Baqarah. A man from the Ansar came and prayed behind him, then left. The man heard that Muadh was complaining about him to the Messenger of Allah ﷺ, so he asked him about it. The Messenger of Allah ﷺ said to Muadh, "You are causing a fitna (trial) and a fitna." Then he ordered him to recite two middle Surahs from the Mufassal (the last part of the Qur'an). Abu Muhammad said, "We adhere to this."  

أَنَّ مُعَاذًا كَانَ يُصَلِّي مَعَ رَسُولِ اللَّهِ ﷺ ثُمَّ يَأْتِي قَوْمَهُ فَيُصَلِّي بِهِمْ فَجَاءَ ذَاتَ لَيْلَةٍ فَصَلَّى الْعَتَمَةَ وَقَرَأَ الْبَقَرَةَ فَجَاءَ رَجُلٌ مِنَ الْأَنْصَارِ فَصَلَّى ثُمَّ ذَهَبَ فَبَلَغَهُ أَنَّ مُعَاذًا يَنَالُ مِنْهُ فَشَكَا ذَلِكَ إِلَى رَسُولِ اللَّهِ ﷺ فَقَالَ رَسُولُ اللَّهِ ﷺ لِمُعَاذٍ «فَاتِنًا فَاتِنًا فَاتِنًا أَوْ فَتَّانًا فَتَّانًا فَتَّانًا » ثُمَّ أَمَرَهُ بِسُورَتَيْنِ مِنْ وَسَطِ الْمُفَصَّلِ قَالَ أَبُو مُحَمَّدٍ نَأْخُذُ بِهَذَا