In 1965, Siddiqui established the
Sunni Razvi Society International in Mauritius, formed on the directions of
Mustafa Raza Khan Qadri. The organisation spread to France, Holland, Kenya, Pakistan, Sri-Lanka, Suriname and South Africa. During his 1970 visit to Durban, South Africa, he gave lectures on the importance and significance of loving the Islamic prophet
Muhammad and debated with Tablighi Jamaat members. Siddiqui has composed and sung in praise of Mauritius, especially when it gained independence and its status as a republic. His friends included the Governor-general,
Leonard Williams and Sir
Raman Osman, former Prime Minister of Mauritius
Seewoosagur Ramgoolam,
Anerood Jugnauth, A. Pasooraman (Minister Of Education, Arts and Culture). He began organizing continuous weekly Thursday study circles at the Jummah Mosque. On 20 February 1983, Siddiqui laid the foundation stone on a large piece of land which had been donated by a disciple. The first weekly study circle occurred on 14 April 1983 under his patronage. ==Works==