Musannaf Ibn Abi Shaybah 31379 — A man supplicating with the inside

Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) was supplicating at Arafah, and he (peace and blessings be upon him) had raised both his hands in such a way that the backs of his hands were in front of his face and the inner part of his hands faced the ground.