This treatise is one of the Mirzä Ahmad Äshtiyäni’s works and writings. In this treatise, the author with mentioning several verses of Quran has explained the “Tawhid” and God’s Oneness and then has stated the prophet’s miracle and his prophecy, etc. This treatise, enclosing with two other treatises by author (Reminiscent of “Tawhid”(Oneness of God) and Useful explaining), for the first time printed in 1932A.D.(1351A.H.), another time, separately in 1966A.D.(1386A.H.) and for the third time in 1983A.D.(1403A.H.). ####
The author’s brief biography:
Mirza Ahmad Ashtiyäni, the Imamism Shi’te “jurisconsult”(jurist) and philosopher, the fourth and youngest child of Mirza Hasan Mojtahed Äshtiyäni, well-known jurisconsult of Naser Al-Din Shäh and Mozaffar Al-Din Shäh Qäjär time, was born in Tehran in 1883A.D. (1300A.H.). After learning the Arabic preliminaries and Persian literature, at the presence of his father studied the preliminary level of “jurisprudence”(fegh), “methodology”(osul) and after his father death in (1901A.D./1319A.H.), continued his studies in the presence of other scholars such as Seyyed Mohammad Yazdi, Mirzä Häshem Rashti, Hakim Kermänshähi and Hakim Eshkevari and then began instructing the “transmitted and rational” (maghool and manghool) in Sepahsälär school. He left for Holy Najaf in 1921 A.D.(1340A.H.) and in addition to benefited from the presence of masters such as Allame Näini and Äghä Ziä’e Aräghi, he also himself instructed the philosophy. He returned to Iran in 1931A.D.(1350A.H.) and spent the rest of his life in Tehran and instructing the jurisprudence, methodology, “rational sciences”(oloom aghli), writing book and guiding the people. Up to end of life he was in charge of Marvi’s theological school, the biggest theological school of Tehran. In addition to “rational and transmitted sciences” (oloom aghli and naghli), Mirza Ahmad, knew about old medicine, old sciences and mathematics. He had beautiful hand writing and composed poetry with pseudonym of “Väle”. He was good-tempered Gnostic, humble, pure-hearted, faithful to religion and super fine example of piety. Mirza Ahamad got permission of Ejtehäd from the authority of that time such as: Mirza Hassan Näini, Hä’eri Yazdi, Äghä Ziyä Al-Din Aräghi, Seyyed Abul Hassan Isfahäni and Häj Äghä Hassan Borujerdi. The result of his marriage was two boys and four daughters. Ayatollah Ashtiyäni after about 80 years teaching and learning, training the people, serving to Islam and Muslims, died at the age of ninety five in 1975/Jun/34 (1354/tir/3 S.H.or 1359/6/14A.H.). He buried in his family tomb in courtyard of Shah Abdol Azime shrine.