«إذا قام أحدكم يصلي فإنه يستره إذا كان بين يديه مثل آخرة الرحل فإذا لم يكن بين يديه مثل آخرة الرحل فإنه يقطع صلاته الحمار والمرأة والكلب الأسود قيل: ما بال الكلب الأسود من الكلب الأحمر؟ قال: الكلب الأسود شيطان»
The Prophet (peace and blessings be upon him) said:
"When one of you stands to pray, if there is something in front of him equal to the back post of a camel's saddle, it serves as a sutrah (barrier) for him. But if there is nothing in front of him equal to the back post of the saddle, then a donkey, a woman and a black dog cut off his prayer. It was asked: What is special about the black dog, when red (or other coloured) dogs do not do this? He (peace and blessings be upon him) said: The black dog is a devil."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 719