Section 44 states
Transfer by one co-owner.—Where one of two or more co-owners of immoveable property legally competent in that behalf transfers his share of such property or any interest therein, the transferee acquires as to such share or interest, and so far as is necessary to give, effect to the transfer, the transferor’s right to joint possession or other common or part enjoyment of the property, and to enforce a partition of the same, but subject to the conditions and liabilities affecting at the date of the transfer, the share or interest so transferred. Where the transferee of a share of a dwelling-house belonging to an undivided family is not a member of the family, nothing in this section shall be deemed to entitle him to joint possession or other common or part enjoyment of the house
so, in the first part for example in a jointly owned undivided flat(not a dwelling house), then can a co-owner sell off his share to a third person ? If so, is partition necessary before selling his share ?