Arabic (Original)
حَدَّثَنَا يَزِيدُ أَخْبَرَنَا مُحَمَّدٌ عَنْ أَبِي سَلَمَةَ عَنْ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا ثُوِّبَ بِالصَّلَاةِ أَدْبَرَ الشَّيْطَانُ لَهُ ضُرَاطٌ وَإِذَا سَكَتَ الْمُؤَذِّنُ خَطَرَ بَيْنَ أَحَدِكُمْ وَبَيْنَ نَفْسِهِ حَتَّى يُنْسِيَهُ صَلَاتَهُ فَلَا يَدْرِيَ كَمْ صَلَّى فَمَنْ وَجَدَ مِنْ ذَلِكَ شَيْئًا فَلْيَسْجُدْ سَجْدَتَيْنِ.
English Translation
Yazid told us: Muhammad informed us, from Abu Salamah, from Abu Hurayrah, who said: The Messenger of Allah, peace and blessings be upon him, said: "When the call to prayer is given, Satan turns his back, breaking wind as he goes; and when the caller falls silent, he returns to whisper between a man and himself, until he makes him forget his prayer, so that he does not know how much he has prayed. So whoever finds something of that, let him perform two prostrations of forgetfulness."