Income tax on insurance

Dear sir/madam, My friend bought a icici prudential single term plan in 2010 and showed some part of it under 80c at that time. he have redumpted this policy after 5 years completion (but the maturity period is for 20years). During redemption time icici prudential team deducted 2% of TDS on sum assured (premium + bonus) but in the starting they they said it is tax less amount, Now my question is do he need to pay tax for this amount or not required if yes Do he need to pay for assured amount or Bonus amount.