It wasnarrated that Jabir said:
The Messenger of Allah (ﷺ) said:"Whenanyone of you prostrates let him be balanced in prostration, andnotspread his arms as a dog does." (RU)
English reference (RU): Vol. 1, Book 5, Hadith 891 (RU)
Arabic reference (RU): Book 5, Hadith 941 (RU)