(12) باب النَّهْىِ عَنِ التَّخَصُّرِ، فِي الصَّلاَةِ
It was narrated that Ziyad bin Subaih said:
"I prayed beside Ibn Umar and put my hand on my waist, and he did this to me-knocked it with his hand. When I had finished praying I said to a man: 'Who is this?' He said: "Abdullah bin Umar.' I said: 'O Abu Abdur-Rahman, why are you angry with me?' He said: 'This is the posture of crucifixion, and the Mesenger of Allah (ﷺ) forbade us to do this.'"
Reference: Sunan an-Nasa'i 891
In-book reference: Book 11, Hadith 16
English translation: Vol. 2, Book 11, Hadith 892