The established hadith of Alqamah bin Wa'il from his father has already passed, that he saw the Prophet (peace and blessings be upon him); then he mentioned the complete hadith, and in it are these words: "So when he (peace and blessings be upon him) prostrated, he prostrated between his two palms."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / Q2691
(a) It is narrated from Sayyiduna Wa'il bin Hujr al-Hadrami (may Allah be pleased with him) that I came to the Messenger of Allah (peace and blessings be upon him), and I resolved in my heart that I would watch how he (peace and blessings be upon him) prays. He (peace and blessings be upon him) stood facing the qiblah and said the takbir, and he (peace and blessings be upon him) raised both his hands up to the level of his shoulders. Then he bowed and placed his hands on his knees; then, when he raised his head from bowing, he again raised both his hands up to the level of his shoulders. Then, when he prostrated, he placed his face between his hands in that position; then he mentioned the complete hadith.
Abd al-Wahid bin Ziyad narrates it from Asim in the same way, that is, that he raised his hands up to the level of his shoulders.
[Weak with this wording, but its meaning is established as sahih in Muslim.]
(b) Sufyan bin Uyaynah also agreed with him regarding the raising of the hands, and Bishr bin al-Mufaddal and others narrate from Asim that he (peace and blessings be upon him) raised his hands to the level of his ears, and when he (peace and blessings be upon him) prostrated he placed his head between his hands.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2691
It is narrated from Sayyiduna Wa'il bin Hujr (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) prostrated, his hands would be level with his ears.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2692
Waki' (may Allah have mercy on him) reports from al-Thawri (may Allah have mercy on him) that he saw the Messenger of Allah (peace and blessings be upon him): when he (peace and blessings be upon him) prostrated, his hands were close to his ears.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2693
Hadith Gradingمحدثین:صحيح
Hadith Takhrij«صحيح۔ وقد تقدم في الذي قبله وهو لفظ ابن ابي شيبه»
Abbas bin Sahl (may Allah have mercy on him) says that Abu Humayd, Abu Usayd, Sahl bin Sa'd and Muhammad bin Maslamah (may Allah be pleased with them) were sitting together. They began discussing the prayer of the Messenger of Allah (peace and blessings be upon him). Abu Humayd (may Allah be pleased with him) said: "I am the most knowledgeable of you all about the prayer of the Messenger of Allah (peace and blessings be upon him)." Then he mentioned the complete hadith. In it there is that he (peace and blessings be upon him) prostrated, firmly placing his nose and forehead on the ground, keeping his arms away from his sides, and placing his palms level with his shoulders.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2694