He spend year 1957 at Darul Uloom, Deoband for one year and the year 1950-51 in Hijaz in for education and Dawah.
Hazrat Maulana Sayyid Mohammad Rabey Hasani is a noted scholar. He is nephew of former President Hazrat Maulana Sayyid Abul Hasan Ali Nadwi @ Ali Mian (Rh).
He was appointed as assistant teacher at Darul Uloom Nadwatul Ulama after completing studies in 1949. He remained at Hijaz (K.S.A.) during 1950-1951 for further studies and research. In 1952 he was appointed Assistant Professor at Darul Uloom Nadwatul Ulama, Lucknow. He was appointed the Head of Arabic Department at Darul Uloom Nadwatul Ulama in 1955. He was appointed the Dean, Faculty of Arabic of Nadwa in 1970.
He was conferred award by Indian Council Uttar Pradesh for his contribution in the field of Arabic language. He was also conferred Presidential Award for his contribution in the field of Arabic language in the same year.
In 1993 he was appointed Muhtamim (Principal) of Darul Uloom Nadwatul Ulama.
In 1999 he was appointed Naib Nazim (Vice-Rector) of the Darul Uloom Nadwatul Ulama and in 2000, after death of Maulana Sayyid Abul Hasan Ali Nadwi (Rh); he was elected as Nazim (Rector) of Nadwa.
He was unanimously elected as the President of All India Muslim Personal Law Board in June 2002 at Hyderabad after death of earlier President Hazrat Maulana Qazi Mujahidul Islam Qasmi (Rh).
He is acclaimed for his scholarship. At present he is President of the All India Muslim Personal Law Board from 23rd June, 2002. He hold several positions in different organisations;
* During the Presidency of Hazrat Maulana Sayyid Mohammad Rabey Hasani 3 meetings of Executive Committee have been held.