(17) باب الْخَصْرِ فِي الصَّلاَةِ
Narrated Abu Huraira:
It was forbidden to keep the hands on the hips during the prayer. (This is narrated by Abu Huraira from the Prophet.) (ID)
Reference (ID): Sahih al-Bukhari 1219 (ID)
In-book reference (ID): Book 21, Hadith 23 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 22, Hadith 310 (ID)