Nur-ul-Huda is the most famous book of Sultan-ul-Arifeen Sultan Bahoo. In this book Sultan Bahoo shed light on all the aspects of Faqr and Marifa and explained all the important terminologies of Faqr. He called this book the syllabus of Faqr. He described about this book as;
Every book contains discussion upon conventional topics but my book contains knowledge of the Eternal that has been revealed from the Divine presence. I have not plagiarized any mystic point from any book nor met any plagiarist. I accessed the Truth myself, inquired the facts directly from the Truth, acquired the Truth and tasted the pleasure of vision of Truth. Except Allah, I have cut off from everyone else.