law: The Delhi Municipal Corporation Act, 1957
  48. Resignation of Chairman and members of the Standing Committee.-
  (1) Any member of the Standing Committee may resign his office by writing under his hand addressed to the Chairman; and the Chairman may resign his office by writing under his hand addressed to the Mayor.
  (2) A resignation under sub-section (1) shall take effect from the date specified for the purpose in the writing referred to in that sub-section, or if no such date is specified, from the date of its receipt by the Chairman or the Mayor, as the case may be.