Arabic (Original)
حَدَّثَنَا أَبَو مُعَاوِيَةَ وَوَكِيعٌ قَالَا حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي سُفْيَانَ عَنْ جَابِرٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا سَجَدَ أَحَدُكُمْ فَلْيَعْتَدِلْ وَلَا يَفْتَرِشْ ذِرَاعَيْهِ افْتِرَاشَ الْكَلْبِ.
English Translation
Abu Mu'awiyah and Waki' told us, they said: al-A'mash told us, from Abu Sufyan, from Jabir, who said: The Messenger of Allah, peace and blessings be upon him, said: "When one of you prostrates, let him keep his posture moderate and not spread his forearms out flat as a dog spreads its forelegs."