(5) باب النَّدْبِ إِلَى وَضْعِ الأَيْدِي عَلَى الرُّكَبِ فِي الرُّكُوعِ وَنَسْخِ التَّطْبِيقِ
Mus'ab b. Sa'd reported:
I said prayer by the side of my father and placed my hands between my knees. My father said to me: Place your hands on your knees. I repeated that (the previous act) for the second time, and he struck at my hands and said: We have been forbidden to do so and have been commanded to place our palms on the knees.
Reference: Sahih Muslim 535 a
In-book reference: Book 5, Hadith 34
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1089