The book, The Miracle of Ahmad (Ijaz-e-Ahmadi) is one of the signs of truthfulness of the Founder of Ahmadiyya Muslim Community, Hazrat Mirza Ghulam Ahmad, Promised Messiah and Mahdi (as).
It was written in 1902 when an opponent in Mudh, India alleged that all prophecies made by Hazrat Mirza Ghulam Ahmad (as) were false and that he didn't possess the miraculous knowledge of the Arabic language he had claimed. In response, the Promised Messiah (as) wrote this book containing a lengthy Arabic Qasidah (ode) in praise of the Holy Prophet Muhammad, may peace and blessings of Allah be upon him.