The Messenger of Allah ﷺ used to raise his hands with every takbir.
حدثنا أيوب بن محمد الهاشمي حدثنا عمر بن رياح عن عبد الله بن طاوس عن أبيه
أن رسول الله ﷺ كان يرفع يديه عند كل تكبيرة
No references are available.
[Its chain of transmission is extremely daif] Busiri said, this chain is daif, containing Umar bin Riyah, and they agreed on grading him daif * He said in Taqrib, "Matruk," and some accused him of lying.