The Sunnah of placing the palms on the knees, and the abrogation of tatbiq

It is narrated from Abu Ya'fur (may Allah have mercy on him) that he said: I heard Mus'ab bin Sa'd (may Allah have mercy on him) say: I prayed beside my father, and I joined my palms together and placed them between my thighs. My father (may Allah be pleased with him) forbade me from that and said: "We too used to do this before; then we were forbidden from it and were commanded to place our hands on the knees."

(a) It is narrated from Mus'ab bin Sa'd (may Allah have mercy on him) that he said: I prayed standing beside my father (may Allah be pleased with him). I placed my hands between my knees, and he pinched my hand. Mus'ab (may Allah have mercy on him) said: I prayed beside him once again and placed my hands between my thighs. He pinched my hand again and said: "My dear son! We too used to do this before; then we were commanded to place the palms on the knees."
(b) Imam Muslim (may Allah have mercy on him) recorded it in his Sahih from Qutaybah and others, and in it there is the addition: "We were forbidden from this and were commanded to place the hands on the knees."

It is narrated from Mus'ab bin Sa'd (may Allah have mercy on him) that he said: I was praying beside my father. When I bowed, I did like this. He joined his hands together and placed them between his legs. When my father finished the prayer, he said: "We too used to do this, but later we were commanded to place the hands on the knees."

It is narrated from Abu Abd al-Rahman al-Sulami (may Allah have mercy on him) that Sayyiduna Umar (may Allah be pleased with him) came forward and said: "O people! The sunnah way for you is that you hold the knees, so hold the knees in bowing."

Abu Abd al-Rahman al-Sulami (may Allah have mercy on him) said: When bowing we used to place our hands between our thighs, so Sayyiduna Umar (may Allah be pleased with him) said: The sunnah way is to hold the knees.

(a) Khaythamah bin Abd al-Rahman (may Allah have mercy on him) narrates from Abu Sabrah al-Ju'fi (may Allah have mercy on him) that he said: I came to Madinah. Like the students of Abdullah bin Mas'ud (may Allah be pleased with him), I too used to place my hands between my thighs in bowing. A man said: What has induced you to do this? I said: Abdullah bin Mas'ud (may Allah be pleased with him) used to do so, and he would say that the Messenger of Allah (peace and blessings be upon him) used to do so.
He said: Abdullah (may Allah be pleased with him) spoke the truth, but the Messenger of Allah (peace and blessings be upon him) did so for some time, then Allah Almighty issued a new command for him (peace and blessings be upon him). So act upon what the Muslims are agreed upon. The narrator said: When he came back, he did not do tatbiq.
(b) Shaykh al-Bayhaqi (may Allah have mercy on him) said: This is what all the people practise. The hadith of Abu Humayd al-Sa'idi (may Allah be pleased with him) contains the description of the bowing of the Prophet (peace and blessings be upon him). It also shows that the people of Madinah are more knowledgeable about the abrogating and the abrogated than the people of Kufah. 'Wa billahi al-tawfiq' (And success is from Allah).