Can I legally marry someone from a different faith even if my parents disapprove? For example, is a court marriage between a Hindu and a Muslim person valid in India?

In India, a simple paper with a revenue stamp and your signature as a witness may not be considered legally binding as a formal agreement. The absence of a comprehensive agreement could weaken the case in court. It is advisable to seek legal advice from a lawyer in Guwahati, Assam to assess the specific situation and explore options for recovering the investment.