Single house bought by two persons litigation

As per the market fair rent and occupied place ratio i.e. 35:65

Thank you for replying Sir.Does he have any right to cut the slab without my permission?

forget the rent recover your posseion, before it is too late that you will lose your property just partition as per the documents and secure your share or he will refuse to let you in after sometime.

Even if you agreee for rentals he will never let you in still he will grab whatever he is in posseion. Just be acreful

posseion *possesion

 acreful  *careful

Thanks for replying Sir.The rooms are positioned in my portion in such a way that if i cut the slab, i had to build walls again and the rooms become short and odd.Rooms are of no use because most of the part is the open land.My friend's portion has no open land.I want to start construction afresh five years later.He is insisting me to cut the slab or else he will do it.Does he have any right to cut the slab without permission.He also constructed two rooms above floor without separating the slab.Is it legal to do so? Please advice taking all these situations into consideration.