It is narrated from Sayyiduna Malik bin al-Huwayrith (may Allah be pleased with him) that when the Messenger of Allah (peace and blessings be upon him) said the takbir, he would raise both his hands to near his ears; when he bowed he would do the same, and when he raised his head from bowing he would do the same.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16678