Can my father transfer property without my consent to my cousin?

I live in Pune and recently found out that my father transferred our joint family property to my cousin without informing me. I contributed to this property's upkeep for years. I feel betrayed and unsure of what my legal rights are. The property was originally in my grandfather's name and passed down. I really need advice on how to contest this transfer and whether I can file a case to reclaim my stake in the property.