"The Messenger of Allah ﷺ used to gently pat our shoulders (to make sure the row was straight) at the time of prayer, and he-would say:'Keep (the rows) straight; do not differ from one another lest your hearts would be afflicted with discord. Let those who are mature and wise stand closest to me, then those who are next to them, then those who are next to them."' Abu Mas'ud said: Today, there is much disharmony among you. ,Abu 'Abdur-Rabin (An-Nasai)said: (One of the narrators) Abu Ma'mar's name is 'Abdullah bin Sakhbarah.  

كَانَ رَسُولُ اللَّهِ ﷺ يَمْسَحُ مَنَاكِبَنَا فِي الصَّلاَةِ وَيَقُولُ لاَ تَخْتَلِفُوا فَتَخْتَلِفَ قُلُوبُكُمْ لِيَلِيَنِّي مِنْكُمْ أُولُو الأَحْلاَمِ وَالنُّهَى ثُمَّ الَّذِينَ يَلُونَهُمْ ثُمَّ الَّذِينَ يَلُونَهُمْ قَالَ أَبُو مَسْعُودٍ فَأَنْتُمُ الْيَوْمَ أَشَدُّ اخْتِلاَفًا قَالَ أَبُو عَبْدِ الرَّحْمَنِ أَبُو مَعْمَرٍ اسْمُهُ عَبْدُ اللَّهِ بْنُ سَخْبَرَةَ  

"While I was in the Masjid in the first row, a man pulled me from behind and moved me aside, and took my place. By Allah, I could not focus on my prayer, then when he left I saw that it was Ubayy bin Ka'b. He said: '0 boy, may Allah protect you from harm. This is what the Prophet instructed us to do, to stand directly behind him.' Then he (Ubayy) turned to face the Qiblah and said: 'Doomed are Ah1 Al-'Uqd, by the Lord of the Ka'bah! - three times.'Then he said: 'By Allah, I am not sad for them, but I am sad for the people whom they have misled.' I said: '0 Abu Ya'qub, what do you mean by Ah1 Al-'Uqd?' He said: 'The rulers."'  

يَا فَتَى لاَ يَسُؤْكَ اللَّهُ إِنَّ هَذَا عَهْدٌ مِنَ النَّبِيِّ ﷺ إِلَيْنَا أَنْ نَلِيَهُ ثُمَّ اسْتَقْبَلَ الْقِبْلَةَ فَقَالَ هَلَكَ أَهْلُ الْعُقَدِ وَرَبِّ الْكَعْبَةِ ثَلاَثًا ثُمَّ قَالَ وَاللَّهِ مَا عَلَيْهِمْ آسَى وَلَكِنْ آسَى عَلَى مَنْ أَضَلُّوا قُلْتُ يَا أَبَا يَعْقُوبَ مَا يَعْنِي بِأَهْلِ الْعُقَدِ قَالَ الأُمَرَاءُ