Musannaf Ibn Abi Shayba 21:552

Isma'il ibn 'Ulayyah narrated to us, from 'Abd al-Rahman ibn Ishaq, from 'Abd al-Rahman ibn Mu'awiyah, from Ibn Abi Dhubab, from Sahl ibn Sa'd, who said: I did not see the Messenger of Allah, may Allah bless him and grant him peace, raising his hands high in supplication upon a pulpit nor elsewhere. And I have seen his hands level with his shoulders while he was supplicating.