Arabic (Original)
حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي سُفْيَانَ عَنْ جَابِرٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا صَلَّى أَحَدُكُمْ فَلَا يَفْتَرِشْ ذِرَاعَيْهِ افْتِرَاشَ الْكَلْبِ.
English Translation
Muhammad ibn Fudayl told us, 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 prays, let him not spread his forearms on the ground like a dog spreads its legs."