Sunan an-Nasa'i 4285
سنن النسائي#4285SahihAs-Saib bin Yazid narrated that Surfyan bin Abi Zuhair Ash-Shanai I came to visit them and said:"The Messenger of Allah said: 'Whoever keeps a dog which he does not need for farming or livestock, one Qirt will be deducted from his (good) deeds each day.' It was said to him: 'did you hear this from the Messenger of Allah He said: 'Yes, by the Lord of this Masjid
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 42:23