The Gujaratis and the Sindhis traded textile, clothing, jewelry and tailoring services; especially in Saigon, where they had many shops. The Chettiars engaged in banking, brokerage, and the rental of commercial buildings, vehicles, boats etc. The Chettiars began their return to India in 1963 due to the political instability after the 1963 coup d'état and assassination of President Ngo Dinh Diem. Tamil Muslims built several mosques in Saigon in the 1930s, including the Central Mosque (vi: "Thánh Đường Đông Du (Dong Du Mosque))" (ar: "Jamia Al-Musulman"), the Chợ Lớn Mosque (vi: "Thánh Đường Chợ Lớn"), and the Jamiul Islamiyah Mosque. Tamil Hindus constructed several prominent temples, notably the Sri Mariamman temple in Ho Chi Minh City, which is also a tourist attraction.; and the Sikhs built a gurdwara, which now serves as a pharmaceuticals office. Some non-Muslim Indians as well as Muslim Indians, married Vietnamese women. Some Chettiars, had both, a Vietnamese spouse in Vietnam and a Chettiar wife in India.