Sunan Abu Dawood 892

Abu Hurairah reported the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم as saying; when you come to pray while we are prostrating ourselves, you must prostrate yourselves, and do not reckon it anything (rak’ah) he has been present at the prayer. ..

Abu saeed al-Khudri said: The mark of earth was seen on the forehead and nose of the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم due to the prayer in which he led the people. ..

The above mentioned tradition has also been transmitted by Mamar through a different chain of narrators to the same effect. ..

Narrated Al-Bara ibn Azib: Al-Bara described to us (the nature of prostration). He placed his hands (palms), reclined on his knees, and raised his hips; he said: This is how the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم used to prostrate himself. ..

Anas reported the Messenger of Allah صلی ‌اللہ ‌علیہ ‌وسلم as saying; Adopt a moderate position when prostrating yourselves, and see that none of you stretches out his forearms (on the ground) like a dog. ..

Maimunah said: When the Prophet صلی ‌اللہ ‌علیہ ‌وسلم prostrated himself, he kept his arms so far away from his sides that if a lamb had wanted to pass under his arms, it could have done so. ..