He reported that when the Messenger of Allah ﷺ said the takbir to begin the prayer, he would raise his hands level with his shoulders. When he bowed, he did the same. When he rose from bowing, he did the same. And when he stood up after the first two rakahs, he did the same.
حدثنا عبد الملك بن شعيب بن الليث حدثني أبي عن جدي عن يحيى بن أيوب عن عبد الملك بن عبد العزيز بن جريج عن ابن شهاب عن أبي بكر بن عبد الرحمن بن الحارث بن هشام
أنه قال كان رسول الله ﷺ إذا كبر للصلاة جعل يديه حذو منكبيه وإذا ركع فعل مثل ذلك وإذا رفع للسجود فعل مثل ذلك وإذا قام من الركعتين فعل مثل ذلك
[Sahih] Reported by Ibn Khuzayma in his Sahih: 694, 695, and from his route Ibn Hajar reported it in Muwafaqat al-Khabar al-Khabar 1/409, 410, and said, "This hadith is sahih." Ibn Jurayj explicitly stated that he heard it directly, and the hadith has many corroborating narrations.