It serves as a supplement to Fath al-Mulhim bi-Sharh Sahih al-Imam Muslim, a work initially written by Shabbir Ahmad Usmani, who completed three volumes before his demise.

[1] The main reason behind composing the book Takmilah Fath al-Mulhim bi-Sharh Sahih al-Imam Muslim, as stated by Taqi Usmani in its introduction, was to fulfill his late father's request to complete the work.

Taqi Usmani's commitment to the project was evident in the daily two-hour sessions he set aside exclusively for writing Takmilah Fath al-Mulhim bi-Sharh Sahih al-Imam Muslim during this extended period.

Taqi Usmani primarily carried out his writing in the esteemed library of Darul Uloom Karachi, surrounded by a treasure trove of religious books that served as sources and references for his scholarly exposition.

[2][3] The first volume of this work compiles insights and opinions from scholars, including Abd al-Fattah Abu Ghudda, Abul Hasan Ali Hasani Nadwi, Yusuf al-Qaradawi, Muhammad al-Mukhtar al-Salami, and Wahbah al-Zuhayli.

Moving to the second volume, the exploration of Hadiths progresses, encompassing subjects such as obligations, customs, wills, vows, oaths, division of property, combatants, retaliation, blood money, legal punishments, jurisdiction, lost and found items, and military expeditions.

The fifth volume offers an in-depth analysis of various aspects, including the virtues of companions, righteousness, maintaining family ties, manners, predestination, knowledge, remembrance, supplication, repentance, seeking forgiveness, asceticism, and interpretation.

'[12] In 2017, Zill-e Huma made an academic contribution by completing her PhD thesis titled Takmila Fathul Mulhim - Manhaj Ka Tehleeli Jaeza in Urdu at the University of the Punjab.

[13] Following his research, Nasar Ahmad also made an impact with his own PhD thesis titled Muhammad Taqi Usmani ki Tadveen Takmila Fathul Mulhim ka Manhaj-o-Wasloob (Tahqiqi-o-Tajziati Mutalia) in Urdu at the University of Sargodha in 2019.