FDI in the tobacco industry and tobacco substitutes products is prohibited.
"CHAPTER 3: GENERAL CONDITIONS ON FDI [...]
3.4   ENTRY ROUTES FOR INVESTMENT 3.4.1 Investments can be made by non-residents in the equity shares/fully, compulsorily and mandatorily convertible debentures/fully, compulsorily and mandatorily convertible preference shares of an Indian company, through the Automatic Route or the Government Route. Under the Automatic Route, the non-resident investor or the Indian company does not require any approval from Government of India for the investment. Under the Government Route, prior approval of the Government of India is required. Proposals for foreign investment under Government Route, are considered by respective Administrative Ministry/Department. 
[...]
3.5   CAPS ON INVESTMENTS
3.5.1 Investments can be made by person resident outside India in the capital of a resident entity only to the extent of the percentage of the total capital as specified in the FDI policy. The caps in various sector(s) are detailed in Chapter 5 of this Circular. 
3.6   ENTRY CONDITIONS ON INVESTMENT
3.6.1 Investments by non-residents can be permitted in the capital of a resident entity in certain sectors/activity with entry conditions. Such conditions may include norms for minimum capitalization, lock-in period, etc. The entry conditions in various sectors/activities are detailed in Chapter 5 of this Circular.
[...]
5.1 PROHIBITED SECTORS
FDI is prohibited in: [...]
g) Manufacturing of cigars, cheroots, cigarillos and cigarettes, of tobacco or of tobacco substitutes 
[...]
5.2 PERMITTED SECTORS
a) In the following sectors/activities, FDI up to the limit indicated against each sector/activity is allowed, subject to applicable laws/regulations; security and other conditionalities. In sectors/activities not listed below, FDI is permitted up to100% on the automatic route, subject to applicable laws/regulations; security and other conditionalities. [...]
c) Foreign investment in sectors under Government approval route resulting in transfer of ownership and/or control of Indian entities from resident Indian citizens to nonresident entities will be subject to Government approval. Foreign investment in sectors under automatic route but with conditionalities, resulting in transfer of ownership and/or control of Indian entities from resident Indian citizens to non-resident entities, will be subject to compliance of such conditionalities. 
[...]
MANUFACTURING
5.2.5 MANUFACTURING
5.2.5.1 Subject to the provisions of the FDI policy, foreign investment in ‘manufacturing’ sector is under automatic route. Manufacturing activities may be either self-manufacturing by the investee entity or contract manufacturing in India through a legally tenable contract, whether on Principal to Principal or Principal to Agent basis.  Further, a manufacturer is permitted to sell its products manufactured in India through wholesale and/or retail, including through e-commerce, without Government approval. 
5.2.5.2 Notwithstanding the FDI policy provisions on trading sector, 100% FDI under Government approval route is allowed for retail trading, including through e-commerce, in respect of food products manufactured and/or produced in India. [...]" (Government of India/Ministry of Commerce and Industry (2020), Consolidated FDI Policy (Effective from October 15, 2020))
Government of India/Ministry of Commerce and Industry (2020), Consolidated FDI Policy (Effective from October 15, 2020)
[<a href="https://dpiit.gov.in/sites/default/files/FDI-PolicyCircular-2020-29October2020_0.pdf">Policy</a>]