I saw the Messenger of Allah ﷺ placing his right hand over his left during the prayer.
حدثنا وكيع حدثنا موسى بن عمير العنبري
رأيت رسول الله ﷺ واضعا يمينه على شماله في الصلاة
Its isnad is sahih, but it is disconnected, since Alqama did not hear from his father. It may be understood that he heard it from his family on the authority of his father. It will come again at 18752.