Prayer (Kitab Al-Salat): Details of Commencing Prayer
Dawud :: Book 3 : Hadith 861
Narrated AbdurRahman ibn Shibl:
The Apostle of Allah (peace_be_upon_him) prohibited to peck like a crow, and to spread (the forearms) like a wild beast, and to fix a place in the mosque like a camel which fixes its place. These are the wordings of Qutaybah.