Musannaf Ibn Abi Shaybah 14683 — Raising the hands when stoning

It is narrated from Nafi' that when Sayyiduna Ibn Umar (may Allah be pleased with them both) performed the stoning, he went forward in front of the Jamrah, supplicated to Allah and raised his hands, and we raised our hands with him. He did not lower his hands until we grew weary and lowered our hands, while he remained as he was.