وَعَنْ أَبِي ذَرٍّ رضى الله عنه
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ («يَقْطَعُ صَلَاةَ اَلْمَرْءِ اَلْمُسْلِمِ) إِذَا لَمْ يَكُنْ بَيْنَ يَدَيْهِ مِثْلُ مُؤْخِرَةِ اَلرَّحْلِ اَلْمَرْأَةُ، وَالْحِمَارُ، وَالْكَلْبُ اَلْأَسْوَدُ... «اَلْحَدِيثَ». وَفِيهِ «اَلْكَلْبُ اَلْأَسْوَدِ شَيْطَانٌ»
The Messenger of Allah (sallallahu alayhi wa sallam), “In case there is not before him (an object) like the back of a saddle, a Muslim’s Salat (prayer) would be cut off by (the passing of) a woman, a donkey and a black dog.” And it concludes: “the black dog is a devil.”.
Bulugh al-Maram 275, Book 2, The Book of Prayer, Hadith 96. 1 min read