Roughly 9 months after becoming the Khalifa, Mahmud Ahmad and his team of Mullahs began responding to the Lahori-Ahmadis. This book was written in response to Kwaja Kamaluddin’s book which had been published a few months earlier in 1914.
Mahmud Ahmad’s error
He was debating the prophethood of MGA with the Lahori-Ahmadis. Mahmud Ahmad explained that MGA’s prophet started after 1902…after the publishing of Tiryaq-ul-Qulub, however, he later changed his story and landed on the “Correction of an Error” announcement in Nov-1901.
Al-Qaul-ul-Fasl, published on 30th January 1915, Mirza Mahmud Ahmad wrote:
“In short, the reference quoted above proves that until the publication of Tiryaq-ul-Qulub, [the writing of] which began in August 1899 and ended on 25 October 1902, his belief was that he has partial excellence over Jesus and that his being called prophet means a kind of partial prophethood and deficient prophethood. But afterwards … he learnt from God that he excels the Messiah in all qualities and is not the recipient of any partial prophethood, but is a prophet. … Thus it is absolutely unallowable to use any writing before 1902 as evidence because the Promised Messiah has given the decision that, as regards his belief about prophethood which he expressed in Tiryaq-ul-Qulub, later revelation made him change it.” (Al-Qaul-ul-Fasl, p. 24. This book is on their website http://www.alislam.org in the collection Anwar-ul-‘ulum, v. 2, book no. 8. See page 285.)