"At this juncture I am concentrating on bringing back black money from abroad, for implementing a strong Lokpal Bill. However, if support pours in for Bharat Swabhiman Sangathan, I will think about joining mainstream politics," Ramdev told reporters.
He was in the city to garner support for the August 9 protest to be held in Delhi under the aegis of Bharat Swabhiman Sangathan.
The proposed stir will be backed by Team Anna, Ramdev said, adding that "we have not decided when the agitation will end".
On allowing FDI in retail sector, Ramdev said doing so will only benefit foreign companies.