Can i sell my share in Joint undivided property ?

Query we come under hindu law. we have a property in Gurgaon with 3 floors made (freehold residential property) I stay in 1 floor , my brother lives in 2nd floor and 3rd floor is empty. This property is UNDIVIDED and not partitioned yet. currently we both brothers have 50-50% undivided ownership. Now i am in need of money and since my brother is not ready to do partition by metes and bounds , i want to sell my undivided share in this property to a third party without informing him and not needing consent of my brother. I have spoken to local dealers and people are willing to purchase my share. How do i go ahead and can i do so ? kindly guide? thanks experts in advance