Sahih Muslim 1574 e
Salim reported on the authority of his father (Allah be pleased with him) that Allah's Messenger (ﷺ) said:
He who kept a dog other than one meant for hunting or for the protection of the herd would lose two qirat of his deeds every day. Salim said: Abu Huraira (Allah be pleased with him) used to say: Or the dog meant for watching the field, and he was the owner of the land.
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا وَكِيعٌ، حَدَّثَنَا حَنْظَلَةُ بْنُ أَبِي سُفْيَانَ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ مَنِ اقْتَنَى كَلْبًا إِلاَّ كَلْبَ ضَارٍ أَوْ مَاشِيَةٍ نَقَصَ مِنْ عَمَلِهِ كُلَّ يَوْمٍ قِيرَاطَانِ ‏"‏ ‏.‏ قَالَ سَالِمٌ وَكَانَ أَبُو هُرَيْرَةَ يَقُولُ ‏"‏ أَوْ كَلْبَ حَرْثٍ ‏"‏ ‏.‏ وَكَانَ صَاحِبَ حَرْثٍ ‏.‏