Sahih al-Bukhari 5481
Book 72: Hunting, Slaughtering · Narrated by `Abdullah bin `Umar
Arabic
حَدَّثَنَا الْمَكِّيُّ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا حَنْظَلَةُ بْنُ أَبِي سُفْيَانَ، قَالَ سَمِعْتُ سَالِمًا، يَقُولُ سَمِعْتُ عَبْدَ اللَّهِ بْنَ عُمَرَ، يَقُولُ سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ " مَنِ اقْتَنَى كَلْبًا إِلاَّ كَلْبٌ ضَارٍ لِصَيْدٍ أَوْ كَلْبَ مَاشِيَةٍ، فَإِنَّهُ يَنْقُصُ مِنْ أَجْرِهِ كُلَّ يَوْمٍ قِيرَاطَانِ ".
English translation
Narrated `Abdullah bin `Umar:I heard the Prophet (ﷺ) saying, "If someone keeps a dog neither for hunting, nor for guarding livestock, the reward (for his good deeds) will be reduced by two Qirats per day
Reference: Sahih al-Bukhari 5481, Book of Hunting, Slaughtering. English translation by Dr. Muhammad Muhsin Khan.