[Machine] I entered with my father to the Messenger of Allah, ﷺ , and he prayed with us. When he finished the prayer, the people gestured with their hands right and left. He looked at them and said, "What is the matter with you that you move your hands as if they were the tails of horses when the sun sets? When one of you finishes the prayer, let him greet the one on his right and the one on his left." When they prayed with him again, they did not do that.  

دَخَلْتُ أَنَا وَأَبِي عَلَى رَسُولِ اللهِ ﷺ فَصَلَّى بِنَا فَلَمَّا سَلَّمَ أَوْمَأَ النَّاسُ بِأَيْدِيهِمْ يَمِينًا وَشِمَالًا فَأَبْصَرَهُمْ فَقَالَ «مَا شَأْنُكُمْ تُقَلِّبُونَ أَيْدِيَكُمْ كَأَنَّهَا أَذْنَابُ الْخَيْلِ الشُّمُسِ إِذَا سَلَّمَ أَحَدُكُمْ فَلْيُسَلِّمْ عَلَى مَنْ عَنْ يَمِينِهِ وَعَلَى مَنْ عَنْ يَسَارِهِ» فَلَمَّا صَلَّوْا مَعَهُ أَيْضًا لَمْ يَفْعَلُوا ذَلِكَ