Mus'ab, the son of Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him), narrates that I prayed next to my father and placed my two palms together between my thighs. At this, my father stopped me and said: We also used to do this before, but later we were forbidden from it, and it was ordered that we should place our hands on our knees.
Hadith Referenceاللؤلؤ والمرجان / كتاب المساجد ومواضع الصلاة / 310
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 10 كتاب الأذان: 118 باب وضع الأكف على الركب في الركوع»