The Prohibition against Keeping a Dog in the Home

807. Abu Hurayra, may Allah be pleased with him, reported that the Messenger of Allah, peace and blessings be upon him, said, “Someone who keeps a dog loses a qirat of his actions every day—unless it is a farm dog or cattle dog.” (Sahih al-Bukhari, Hars, 3; Sahih Muslim, Musaqat, 59).
Annotation: Qirat is a form of measure that may vary in different regions. The Qirat referred in the hadith is a certain amount known to Allah Almighty.

Nawawi, Imam. Riyad As-Salihin; The Gardens of the Righteous: A collection of authentic hadiths. Tughra Books Press, Inc. 2014