ذِكْرُ الْبَيَانِ بِأَنَّ هَذَا الْحُكْمَ إِنَّمَا يَكُونُ لِمَنْ لَمْ يَكُنْ بَيْنَ يَدَيْهِ كَآخِرَةِ الرَّحْلِ
Abu Dharr said (and not the Prophet): If there is not anything like the back of a saddle in front of a man who is praying, then a donkey, a black dog, and a woman cut off his prayer. I asked him: Why has the black dog been specified, distinguishing it from a red, a yellow and a white dog? He replied: My nephew, I also asked the Messenger of Allah ﷺ the same question as you asked me. He said: The black dog is a devil. (Using translation from Abū Dāʾūd 702)
سَأَلْتُ أَبَا ذَرٍّ عَمَّا يَقْطَعُ الصَّلَاةَ فَقَالَ إِذَا لَمْ يَكُنْ بَيْنَ يَدَيْكَ كَآخِرَةِ الرَّحْلِ الْمَرْأَةُ وَالْحِمَارُ وَالْكَلْبُ الْأَسْوَدُ قُلْتُ مَا بَالُ الْأَسْوَدِ مِنَ الْأَصْفَرِ مِنَ الْأَبْيَضِ؟ قَالَ يَا ابْنَ أَخِي سَأَلْتُ رَسُولَ اللَّهِ ﷺ كَمَا سَأَلْتَنِي فَقَالَ «الْكَلْبُ الْأَسْوَدُ شَيْطَانٌ»