The Indian Succession Act,1925
Section 126. Bequest upon impossible condition
A bequest upon an impossible condition is void.
Illustrations
(i) An estate is bequeathed to A on condition that he shall walk 100 miles in an hour. The bequest is void.
(ii) A bequeaths 500 rupees to B on condition that he shall marry A’s daughter. A’s daughter was dead at the date of the will. The bequest is void.