كتاب التطبيق
Read the English translation first, with the original Arabic directly underneath.
It was narrated from Anas that:
The Messenger of Allah (ﷺ) said: "Do not rest your forearms on the ground like a dog when prostrating."
لاَ يَفْتَرِشْ أَحَدُكُمْ ذِرَاعَيْهِ فِي السُّجُودِ افْتِرَاشَ الْكَلْبِ