Jabir bin Samura reported,

The Messenger of Allah ﷺ came out to us and said, "Why do I see you raising your hands as if they were the tails of restive horses? Be still in the prayer."

Azami 1946

Sahih

عن جابر بن سمرة، قال

خرج علينا رسول الله ﷺ، فقال: مالي أراكم رافعي أيديكم كأنها أذناب خيل شمس؛ اسكنوا في الصلاة.

الأعظمي 1946صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Prayer
Chapter
Description of prayer, the takbir, standing, and recitation
Section
Those who said raising the hands is not a sunnah at ruku and when rising from it
Numbering
Jami al-Kamil 1946 (2nd edition)
Azami 1946