In one narration the words are: The narrator named Uthman demonstrated this: the narrator named Hammad had raised both hands, and both his palms were facing the ground. Ahmad recorded all these narrations; their chain contains Bishr bin Harb, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأدعية / 17332