"Be moderate in bowing and prostration, and do not rest your forearms along the ground like a dog." (Using translation from Nasāʾī 1028)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ اعْتَدِلُوا فِي السُّجُودِ وَلَا يَبْسُطْ أَحَدُكُمْ ذِرَاعَيْهِ كَمَا يَبْسُطُ الْكَلْبُ