The Prophet ﷺ as saying: If anyone gets a dog, except a sheeping or hunting or a farm dog, a qirat of his reward will be deducted daily. (Using translation from Abū Dāʾūd 2844)
عَنِ النَّبِيِّ ﷺ قَالَ «مَنِ اتَّخَذَ كَلْبًا إِلَّا كَلْبَ صَيْدٍ أَوْ مَاشِيَةٍ أَوْ زَرْعٍ نَقَصَ مِنْ أَجْرِهِ كُلَّ يَوْمٍ قِيرَاطٌ»