(5) باب النَّدْبِ إِلَى وَضْعِ الأَيْدِي عَلَى الرُّكَبِ فِي الرُّكُوعِ وَنَسْخِ التَّطْبِيقِ
Mus'ab b. Sa'd b. Abu Waqqas reported:
I said prayer by the side of my father. When I bowed I intertwined my fingers and placed them between my knees. He struck my hands. When he completed the prayer he said: We used to do that but then were commanded to lift (our palms) to the knees.
Reference: Sahih Muslim 535 d
In-book reference: Book 5, Hadith 37
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1092