Sachchai ka Izhar (The Truth Revealed) published in May 1893 is a brief compilation of letters, articles, and public announcements that preceded the well-known debate, Jang-e-Mugaddas (the Holy War), between the Promised Messiah^(as) and the Christian missionary
Abdullah Atham.

This debate challenge was initiated b y the Christians and its name, Jang-e-Mugaddas, was selected by them as well. At the end of the booklet, the Promised Messiah^(as) announces his acceptance of a mubahalah (prayer duel) challenge issued by Abdul-Haqq Ghaznavi.

The Promised Messiah^(as) also lists the names of twenty other ulema whom he invites to come forward against him and either accept the mubahalah challenge or acknowledge defeat through their silence and failure to respond. This mubahalah took place at the Eid Gah in Amritsar after the Jang-e-Mugaddas debate was conducted at the residence of Dr Henry Martyn Clarke.