1. Firstly no restriction on free transfer of property can be made by any law of the land.
2. In the case of co-operative property such share can equally be transferred at will if the tramsferor is holding the share for more than one year.
3. By way of section 78(2) of the Act, the transferer can transfer his share by way of deed of gift.
4. Even without NOC of the Society the flat can be gifted to brother by the owner.