It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) used to raise his hands up to the level of his shoulders while performing the raising of the hands (raf‘ al-yadayn).
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5843
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد ضعيف لضعف العمري، لكنه متابع.