Section 30(1)(a) in The Government Of National Capital Territory Of Delhi Act, 1991
(a)if the amount authorised by any law made in accordance with the provisions of section 29 to be expended for a particular service for the current financial year is found to be insufficient for the purposes of that year or when a need has arisen during the current financial year for supplementary or additional expenditure upon some new service not contemplated in the annual financial statement for that year, or