Sayyiduna Malik bin Huwairith (may Allah be pleased with him) narrates that when the Prophet Muhammad (peace and blessings be upon him) began the prayer, he would raise both his hands while saying the takbeer, until both hands reached the level of his ears. He would do the same when going into ruku‘ and when rising from ruku‘.
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 1863
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «صحيح أبي داود» (330): م، خ نحوه.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط مسلم