Sunan an-Nasa'i 4288
سنن النسائي#4288Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا يَحْيَى، وَابْنُ أَبِي عَدِيٍّ، وَمُحَمَّدُ بْنُ جَعْفَرٍ، عَنْ عَوْفٍ، عَنِ الْحَسَنِ، عَنْ عَبْدِ اللَّهِ بْنِ مُغَفَّلٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " مَنِ اتَّخَذَ كَلْبًا إِلاَّ كَلْبَ صَيْدٍ أَوْ مَاشِيَةٍ أَوْ زَرْعٍ نَقَصَ مِنْ أَجْرِهِ كُلَّ يَوْمٍ قِيرَاطٌ " .
It was narrated from 'Abdullah bin Mughaffal that the Prophet said:"Whoever keeps a dog, except a dog for hunting, herding livestock or farming, one Qurat will be deducted from his reward each day
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 42:26