It wasnarrated from Anas bin Malik that the Prophet (ﷺ) said:
"Bebalanced in prostration; none of you should prostrate with his armsspread out like a dog." (JA)
English reference (JA): Vol. 1, Book 5, Hadith 892 (JA)
Arabic reference (JA): Book 5, Hadith 942 (JA)