The Indian Succession Act,1925
Section 174. Period of vesting where will directs that annuity be provided out of proceeds of property, or out of property generally, or where money bequeathed to be invested in purchase of annuity
Where the will directs that an annuity shall be provided for any person out of the proceeds of property, or out of property generally, or where money is bequeathed to be invested in the purchase of any annuity for any person, on the testator’s death, the legacy vests in interest in the legatee, and he is entitled at his option to have an annuity purchased for him or to receive the money appropriated for that purpose by the will.
(i) A by his will directs that his executors shall, out of his property, purchase an annuity of 1,000 rupees for B. B is entitled at his option to have an annuity of 1,000 rupees for his life purchased for him or to receive such a sum as will be sufficient for the purchase of such an annuity.
(ii) A bequeaths a fund to B for his life, and directs that after B’s death, it shall be laid out in the purchase of an annuity for C. B and C survive the testator. C dies in B’s lifetime. On B’s death the fund belongs to the representative of C.