Section 4
[PROVIDED that no appeal by an insured person shall lie under this sub-section if such person has applied for commutation of disablement benefit on the basis of the decision of the medical board and received the commuted of such benefit:
[PROVIDED that no appeal by an insured person shall lie under this sub-section if such person has applied for commutation of disablement benefit on the basis of the decision of the medical board and received the commuted of such benefit: