He saw the Messenger of Allah ﷺ raise his hands together with the takbir.
حدثنا مسدد حدثنا يزيد يعني ابن زريع حدثنا المسعودي
أنه رأى رسول الله ﷺ يرفع يديه مع التكبيرة
[Its chain of transmission is daif] Ahmad: 4/316 reported it from the hadith of Masudi through him. Ahl Bayt al-Jabbar, I do not know them, and Munziri said, they are unknown.