Whenever the Messenger of Allah ﷺ said the takbir, he would raise his hands until they were close to his ears. When he bowed, he would do the same, and when he raised his head from bowing, he would do the same.
حدثنا حميد بن مسعدة حدثنا يزيد بن زريع حدثنا هشام عن قتادة عن نصر بن عاصم
أن رسول الله ﷺ كان إذا كبر رفع يديه حتى يجعلهما قريبا من أذنيه وإذا ركع صنع مثل ذلك وإذا رفع رأسه من الركوع صنع مثل ذلك
Muslim reported it, Prayer, chapter on the recommendation of raising the hands level with the shoulders, hadith 391, from the hadith of Qatada, transmitted through him. It has other chains of transmission in Bukhari, hadith 737, and Muslim and others. See also the previous hadith.