[6] He authored a series of leading books on the biographies of the Ahl al-Bayt called Min al-Mahd Ila al-Lahd (From the Cradle to the Grave).

He studied oratory under his third cousin, Sayyid Muhammad-Salih al-Qazwini (d. 1956; author of notable book, al-Mawʿiḍa al-Ḥasana, a critique of Ali al-Wardi's Wuʿaẓ al-Salaṭīn), and excelled in his public speaking.

The first time was to Kuwait, in 1973, due to the pressures and prosecutions of the Baathist regime, where he practiced his religious activities from Masjid Bin Nakhi.

Towards the end of his life, al-Qazwini suffered from a neurological disease that began to take a significant toll on his health, especially his speech, until he died because of it, in the evening of Thursday, November 17, 1994 in Qom.

It took the fall of the regime to allow for this to happen, and on May 8, 2011, his family decided to have his corpse exhumed and transferred to Karbala, and was buried in the Imam Husayn shrine.