Noor-ul-Haq (The Light of Truth) is a two-part Arabic book written by Mirza Ghulam Ahmad, the founder of the Ahmadiyya Movement in 1894. It consists of both prose and poetry. The first part was written in refutation of a book written by Padre Imad ud-Din Lahiz, a Christian preacher who had apostatised from Islam. The second part was written with regards to the solar and lunar eclipses which took place in 1894.[1] With the publication of the book Ghulam Ahmad issued an advertisement with a reward of 5,000 rupees to anyone who could produce its like in terms of literary style.