It is narrated from Sayyiduna Sufyan bin Zuhair, may Allah be pleased with him, and he was a man from the tribe of Shanū’ah and a companion of the Messenger of Allah, peace and blessings be upon him, and he was relating hadith to the people at the door of the Prophet’s Mosque. He said: I heard the Messenger of Allah, peace and blessings be upon him, say:“Whoever keeps a dog, not for the purpose of guarding crops nor for guarding sheep, then every day there will be a decrease and loss in his deeds equal to one qirat.”Sa’ib bin Yazid asked Sayyiduna Sufyan, may Allah be pleased with him: Did you hear this from the Messenger of Allah, peace and blessings be upon him? He said: Yes, by the Lord of this mosque.