It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The angels of mercy do not enter a house in which there is a person in a state of major ritual impurity (junub), or an image, or a dog."
Hadith Referenceمسند احمد / مسند الخلفاء الراشدين / 632
Hadith Gradingحکم دارالسلام:صحيح لغيره، دون ذكر الجنب، وهذا إسناد ضعيف لعلل