It is narrated from Sayyiduna Buraidah Aslami (may Allah be pleased with him) that Jibreel (peace be upon him) delayed coming to the Noble Prophet (peace and blessings be upon him). Then when he arrived, the Prophet (peace and blessings be upon him) asked: "What kept you from coming?" He (Jibreel) said: "We do not enter a house in which there is a dog."