[Machine] He said that there are two qualities that I have not seen anyone ask about from the people. I saw the Messenger of Allah ﷺ performing them. These qualities are offering the Imam's prayer behind a man from his congregation, and I saw the Messenger of Allah ﷺ offering prayer behind Abdullah bin Awf, a Rak'ah from the Fajr prayer. I also saw the Messenger of Allah ﷺ wiping over his two socks.  

أَنَّهُ قَالَ خَصْلَتَانِ لَا أَسْأَلُ عَنْهُمَا أَحَدًا مِنَ النَّاسِ رَأَيْتُ رَسُولَ اللهِ ﷺ فَعَلَهُمَا صَلَاةُ الْإِمَامِ خَلْفَ الرَّجُلِ مِنْ رَعِيَّتِهِ وَقَدْ رَأَيْتُ رَسُولَ اللهِ ﷺ صَلَّى خَلْفَ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ رَكْعَةً مِنْ صَلَاةِ الصُّبْحِ وَمَسْحُ الرَّجُلِ عَلَى خُفَّيْهِ وَقَدْ رَأَيْتُ رَسُولَ اللهِ ﷺ يَمْسَحُ عَلَى الْخُفَّيْنِ