[Machine] If we pray behind the Messenger of Allah ﷺ and one of us finishes his prayer, he should signal with his hand from his right and from his left. When he finishes, he should say, "What is the matter with any of you throwing his hand as if they are the tails of sunlit horses? Is it not sufficient for any of you to say like this?" And he pointed with his finger and greeted his brother from his right and from his left.
إِذَا صَلَّيْنَا خَلْفَ رَسُولِ اللهِ ﷺ فَسَلَّمَ أَحَدُنَا أَشَارَ بِيَدِهِ مِنْ عَنْ يَمِينِهِ وَمِنْ عَنْ شِمَالِهِ فَلَمَّا صَلَّى قَالَ مَا بَالُ أَحَدِكُمْ يَرْمِي بِيَدِهِ كَأَنَّهَا أَذْنَابُ خَيْلٍ شُمْسٍ إِنَّمَا يَكْفِي أَوَلَا يَكْفِي أَحَدَكُمْ أَنْ يَقُولَ هَكَذَا وَأَشَارَ بِأُصْبُعِهِ وَيُسَلِّمُ عَلَى أَخِيهِ مِنْ عَنْ يَمِينِهِ وَمِنْ عَنْ شِمَالِهِ؟