Your father can file suit for partition for division of property by metes and bounds
2) partition suit take 15 years to be disposed of
3) your father can seek injunction restraining his brother from creating third party rights on the property
4) in case Hafiz Abdul Basit (Supra), relevant portion is reproduced as under:
"While delivery of possession is an essential condition for the validity of the gift. It is not necessary that in every case there should be a physical delivery of possession. Possession, the delivery of which would complete a gift, may be either actual or constructive. All that is necessary is that the donor should divest himself completely of all ownership and dominion over the subject of the gift. (Mohd. Baksh Vs. Hosaini bibi, ILR 15 Cal 684). The relinquishment of control is thus necessary to complete the gift. Constructive possession of the subject of the gift is, therefore, sufficient. Delivery of possession can be made in such a manner as the subject of the gift is susceptible of (Sadik hussain Dr Syed A. R. Zaidi Vs Mrs. Naseem Akbar Khan Vs. Hashim Ali Khan, 43 Ind App 212 = (AIR 1916 PC 27).