Please have a look at the follg,
Deduction in respect of life insurance premia, deferred annuity, contributions to provident fund, subscripttion to certain equity shares or debentures, etc.
(1) In computing the total income of an assessee, being an individual or a Hindu undivided family, there shall be deducted, in accordance with and subject to the provisions of this section, the whole of the amount paid or deposited in the previous year, being the aggregate of the sums referred to in sub-section (2), as does not exceed one lakh rupees.
(2) The sums referred to in sub-section (1) shall be any sums paid or deposited in the previous year by the assessee
(i) to effect or to keep in force an insurance on the life of persons specified in sub-section (4);
Hence only the payer can claim deduction.
Suppose if husband claims deduction, the wife does not lose the right to claim deduction(As she is the payer). By doing so, it will amount to double deduction