Noor Deen was constantly involved in religious debates with Christians and Hindus during his stay at Jammu. Once he was confronted by an atheist who asked him that if the concept of God was true, then how in this day and age of reason and knowledge, no one claims to be the recipient of Divine revelations. This was a question to which the Noor-ud-Din did not find an answer immediately .[6] During the same period, he came across a torn page from a book named Barahin-e-Ahmadiyya.
The book was written by one Mirza Ghulam Ahmad of Qadian, who would later claim to be the Promised Messiah and Mahdi. Noor-ud-Din was surprised to see that the writer of the page was a claimant of receiving Wahi (revelation). He purchased the book and read it with great interest. He was so impressed by the book that he decided to meet the writer. Noor-ud- Din later recalled his first meeting with Ghulam Ahmad in his own words.[7]
“ As I arrived in a nearby place of Qadian, I got excited and was also trembling with anxiety and prayed feverishly.... ”
Noor-ud-Deen later stated:
“ It was after Asr prayer, I approached Masjid Mubarak. As soon as I saw his face I was overjoyed, and felt happy and grateful to have found the perfect man that I was seeking all my life...
At the end of the first meeting, I offered my hand for Bay'ah. Hazrat Mirza Sahib (Ghulam Ahmad) said, he was not yet Divinely commissioned to accept Bay'ah; then I made Mirza Sahib promise me that I would be the person whose Bay'ah would be accepted first...(Al-Hakam, April 22, 1908)
”
During his stay in Qadian, Nooruddin became a close friend of Ghulam Ahmad and it is apparent in the writings of both persons that they held each other in highest esteem. Although this relationship soon became that of a Master and disciple and Noor Deen devoted himself as a student to Ahmad. He eventually migrated to Qadian and made his home there soon after he was made to leave his job in Kashmir. He would often accompany Ghulam Ahmad on his travels.
Noor Deen once asked Mirza Ghulam Ahmad to assign him a task by the way of Mujahida (Jihad). Ahmad asked him to write a book answering the Christian allegations against Islam. As a result, Nooruddin wrote two volumes of Faslul Khitab, Muqaddimah Ahlul Kitaab[8]
After completing this, he again asked Ghulam Ahmad the same question. This time, Ahmad assigned him to write a rebuttal to Arya Samaj. Nooruddin wrote Tasdeeq e Barahin-e-Ahmadiyya.[9]
