You can find the Bhavishya Purana in English translation online on various platforms such as sacred-texts.com, hinduwebsite.com, and Amazon. Additionally, some academic libraries may also carry English translations of the Bhavishya Purana.
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Its not mention small religious like sikh but it mention
rajput(rajputra)
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There is a book of prophesy not not many believe in it. It is
Bhavishya Purana. Basically people interpolate what has already
happened. Bhavishya Purana professes even the reign of Queen
Victoria. The only prophecy that hindus believe is that the tenth
avatara of Vishnu would come 427,000 years from now.