Maulana Muhammad Salim Qasmi is the great grandson of Hujjatul Islam Imam Muhammad Qasim Nanatawi, the founder of the first Darul Uloom in Deoband. Maulana Salim Qasmi is the current rector of Darul Uloom Waqf Deoband, the Vice President of “The All India Muslim Personal Law Board”, the president of advisory board of Mazahirul Uloom Saharanpur, the President of “The All India Muslim Majlis-e-Mushawarat” and is the permanent member of “the Fiqh Council of Al-Azhar”, Cairo (Egypt).
Maulana Muhammad SaalimQasmi now is the only surviving theologian and Islamic scholar who directly links entire Deobandi scholarship to the early generations of the great Ulama of Deoband. Maulana Muhammad SalimQasmi is only surviving disciple of Hakimul Ummat Maulana Ashraf Ali Thanawi. Due to his being student of Al-Thanawi through only two mediators in between one can trace his intellectual roots to Al-Nanawtawi directly.
Early Life and Education
Maulana Mohammad Salim Qasmi was born on 8/01/1926 = 22/06/1344 H. Friday in Deoband. He took admission in Darul Uloom Deoband in 1351 and completed his studies from beginning till the end. He learnt Nazirah and Hifz under Peer JiShareef Hasan Gangohi, Farsi books under Maulana Aaqilsb, Maulana Zaheersband Maulana Hasan sb. Besides, he learnt Kanzul Daqaaiq from Maulana Akhtar Husain, Maybuzi from Qari Asgharsb, Mukhtasar and Sullamul Uloom from Maulana Abdul Sameesb, and Hidaya from Maulana Abdul Ahad Sb. He studied Hadith books in the final year of Fazeelah Course under Shaikhul Islam Maulana Husain Ahmad Madani, Allama Ibraheem Balyavi, Maualana Aizaz Ali Amrohvi, Maulana Fakhruddin Sb.
He completed Fazilat course in the year 1948 = 1367H, and was appointed as a teacher in the same year in Darul Uloom Deoband.
He got chance to teach all important books of Darse Nizami like Nurul-Eizah, Tafseer e Quran, Hidaya, Sharh Aqaaid, Mishkat, Abu Dawud, Bukhari, and many other important books. His SharhAqaaid class was largelyadmired.
Rectorship of Darul Uloom Waqf Deoband
After the renowned dispute in 1982, Maulana Mohammad Salim Qasmi became the administrator of Darul Uloom Waqf Deoband. At that time, Darul Uloom Waqf Deoband was passing through very crucial condition; it had nothing to survive, it was surrounded by difficulties all around. Darul Uloom Waqf Deoband was in dire need to make its name and fame around the world which it did in a very short span of time in the supervision of Maulana Mohammad Salim Qasmi.
As he is one of the top speakers of Ulama, his articles and writings are also much admired. Some of the books are worthy to be mentioned here like (1) Mabaadi al Tarbiyat al Islami (Arabic), (2) JaizaTarjama Quran Karim, (3) Taajdar e Arze Haram kaPaigham, (4) Mardaan e Ghaazi, (5) Ek Azeem Tarikhi Khidmat, (6) Safar Nama Burma.
(7) The book Khutbat e Khatibul Islam (The collection of his speeches) has been published in 5 volumes. Moreover, there are many articles and scripts waiting to be published. May Allah protect him and prolong his life.
Innā lillāhi wa innā ilayhi rājiʿūn. Indeed, to Allāh we belong, and to Him we are returning.
On the 29th of Rajab, 1439 (the 14th of April) renowned scholar, Moulana Muhammad Salim Qasmi passed on to meet his Lord at the age of 92. 
The Sheikh was from a well-known scholarly family and one which the da’wah in the Indian Subcontinent benefitted from. Both his father and grandfather, Moulana Muhammad Tayyib, and Moulana Muhammad Ahmad served as the Rector of Darul Uloom Deoband. His great grandfather was Moulana Qasim Nanotvi, the founder of Darul Uloom Deoband. We ask Allāh to have mercy on them all and accept them together in to the highest levels of Jannah without any accountability. Amīn.
The Sheikh studied under a number of scholars including Moulana Husain Ahmad Madani and was the last surviving student of Moulana Ashraf Ali Thanwi. In addition to being a committed student, teacher and caller to Islam, he served in a number of different organisations; he was the administrator of Darul Uloom Waqf Deoband since 1982 and then later became the ‘Chief Rector’ on 3rd Sep 2014.  The Sheikh was also the Vice President of the All India Muslim Personal Law Board, the President of the advisory board of the renowned Islamic school Mazahirul Uloom Saharanpur, the President of the All India Muslim Majlis-e-Mushawarat, and a permanent member of the Fiqhi Council of the University of al-Azhar.
Following the examples of his teachers the Sheikh did not shy away from activism, and took part in the Anti-Terrorism conference in Deoband where texts were drafted, defining terrorism, condemning terrorism, and speaking against the unjust attempts to link Islamic schools to terrorist activities as well as the unjust detention of innocent Muslims.
The Sheikh has also left behind a family committed to the service of the religion in various fields. His son Muhammad Badr Alam Qasmi runs a charitable trust which manages a number of medical facilities, and his daughter Uzma Naheed is a renowned social activist who runs an Islamic school herself and, like her father, is a member of the All India Muslim Personal Law Board.
We pray that Allāh (subḥānahu wa taʿālā) grant patience and strength to all his family. May Allāh (subḥānahu wa taʿālā) have mercy on him, forgive him and elevate his ranks in Jannah, Amīn.