عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مَنْ أَمْسَكَ كَلْبًا فَإِنَّهُ يَنْقُصُ مِنْ عَمَلِهِ كُلَّ يَوْمٍ قِيرَاطٌ إِلَّا كَلْبَ حَرْثٍ أَوْ مَاشِيَةٍ
Narrated by Sayyiduna Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Whoever keeps a dog, one qirat from his deeds is reduced every day, except if the dog is for guarding crops or livestock.