Anas reported
The Messenger of Allah (ﷺ) said: Observe moderation in prostration, and let none of you stretch out his forearms (on the ground) like a dog.
This hadith has been narrated by Shu'ba with the same chain of transmitters. And in the hidith transmitted by Ibn Ja'far (the words are)
" None of you should stretch out his forearms like the stretching out of a dog."
Al-Bira' (b. 'Azib) reported
The Messenger of Allah (ﷺ) said. When you prostrate yourself, place the palms of your hands on the ground and raise your elbows.