"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 Sanghatna, I will think about joining mainstream politics," Ramdev told reporters.
He was in the city to garner support for the Aug 9 protest to be held in Delhi under the aegis of Bharat Swabhiman Sanghatna.
The proposed stir will be backed by Team Anna, Ramdev said, adding "we have not decided when the agitation will end".
On allowing FDI in the retail sector, Ramdev said doing so will only benefit foreign companies.