The Indian Succession Act,1925
Section 343. Procedure when no fund charged with, or appropriated to, annuity
Where an annuity is given and no fund is charged with its payment or appropriated by the will to answer it, a Government annuity of the specified amount shall be purchased, or, if no such annuity can be obtained, then a sum sufficient to produce the annuity shall be invested for that purpose in securities of the kind mentioned in section 341.