Sale of undivided share in property while partition suit in court

Hi, I have a property in Greater Kailash area in South Delhi. It is a parental property and the sale deed is in my grandfathers name. later the property was divided equally between my father and my chacha. It is a 208 sq. yd. property which is now divided in the following manner: Ground Floor - Chacha First Floor - With us 2nd & 3rd Floor - vertical partition (Left portion chacha/ Right portion with us) We are four siblings holding 50% undivided share in the property. I have the posession of 1st Floor and my brother has the posession of 2nd and 3rd (right portion) My brother filed a partition suit to get the property divided in four equal parts and get the first floor vertical division done in the same manner as it is done on 2nd and 3rd floor. Court denied his application and said that either the parties do a settlement or the property will be auctioned. My chacha has no role it in as his part is not in question and his mutation and our mutation is done separately. we had all agreed to four equal share holders in the property and the same is mentioned in the prelimanry decree as well. My question is that now if my siblings are not coming to any settlement, can i sell my share i.e 1/4th to a third party and make him party in the case? Also, if that is possible can I also hand over my posession to him i.e first floor till the time court decides for auction? Regards, Rahul