This paper focuses on the theme of communal harmony and renunciation in Basavaraj Naikar's latest novel “Light in the House”. It is a fictionalized version of the life of Sharif Saheb of Shisunala, who lived in the nineteenth century India and who was a rare combination of a folk artist, a spiritual songster, a mystic and an apostle of communal harmony between Hindus and Muslims. Though born as a muslim, he was taught by a Virasaiva preacher, Siddaramayya and a Brahmin preacher, Govindabhatta. His concept of Khadar-Linga is an ample evidence of his communal harmony which is especially relevant to twenty-first century India and so necessary for the national integration of the country. Towards the end, Sharif Sahib realized the ephemerality of worldly life and therefore developed a deep sense of renunciation. He is often called the 'Kabir' of Karnataka