Narrator:Anas ibn Mālik
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ "
اعْتَدِلُوا فِي السُّجُودِ وَلاَ يَفْتَرِشْ أَحَدُكُمْ ذِرَاعَيْهِ افْتِرَاشَ الْكَلْبِ "
Anas reported the Messenger of Allah(ﷺ) 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.
Reported by Abu Dawud (No. 897), Al-Bukhari (No. 822), Muslim (No. 493a, 493b), At-Tirmidhi (No. 276), An-Nasa’i (No. 1028, 1110), Ibn Majah (No. 892), Ahmad (No. 11623, 11706, 12347, 12375, 12522, 12755, 13390, 13462) and Ad-Darimi (No. 1288).