In accordance with Sec 44 of the Transfer of Property Act 1882, a co-owner can sell his/her undivided share in a self acquired immovable property (land) without consent from the other co-owners. My query is can a co-owner sell just "a portion" of his undivided share? For example, say, there are 2 co-owners (A & B) of a big land parcel & one of the co-owners (B) decides to sell 50% of his undivided share to a buyer (C). So the ownership would be A=50%, B=25% & C=25% all undivided co-owners. Can B do it & do it without A's consent?