Sunan an-Nasa'i #1185 · The Book of Forgetfulness (In Prayer)

Sunan an-Nasa'iIt was narrated that Jabir bin Samurah said
Sunan an-Nasa'i · Book 13 · The Book of Forgetfulness (In Prayer)
Sunan an-Nasa'i · كتاب 13 · كتاب السهو
"We used to pray behind the Messenger of Allah (ﷺ) and we would greet (others) with our hands. He said: 'What is the matter with those who greet (others) with their hands as if they were tails of wild horses? It is sufficient for any one of you to put his hand on his thigh and say: "As-salamu 'alaikum, as-salamu 'alaikum
أَخْبَرَنَا أَحْمَدُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا يَحْيَى بْنُ آدَمَ، عَنْ مِسْعَرٍ، عَنْ عُبَيْدِ اللَّهِ ابْنِ الْقِبْطِيَّةِ، عَنْ جَابِرِ بْنِ سَمُرَةَ، قَالَ كُنَّا نُصَلِّي خَلْفَ النَّبِيِّ صلى الله عليه وسلم فَنُسَلِّمُ بِأَيْدِينَا فَقَالَ ‏
"‏ مَا بَالُ هَؤُلاَءِ يُسَلِّمُونَ بِأَيْدِيهِمْ كَأَنَّهَا أَذْنَابُ خَيْلٍ شُمْسٍ أَمَا يَكْفِي أَحَدَهُمْ أَنْ يَضَعَ يَدَهُ عَلَى فَخِذِهِ ثُمَّ يَقُولَ السَّلاَمُ عَلَيْكُمُ السَّلاَمُ عَلَيْكُمْ ‏"‏ ‏.‏
Reference : Sunan an-Nasa'i 1185In-book reference : Book 13, Hadith 7