(a) When a minor ward for whom a guardian has been appointed under the provisions of this article or other laws of this state shall have attained his or her majority, and if incompetent, shall be declared competent by the administration and the court, and when any incompetent ward, not a minor, shall be declared competent by said administration and the court, the guardian shall upon making a satisfactory accounting be discharged upon a petition filed for that purpose. Provided, however, if a guardian has received other property in addition to the benefits from the administration and income from such benefits, his discharge as to such property shall, in the case of an incompetent ward, be governed by the laws which govern the discharge of a committee of an incompetent, and in the case of an infant ward, by the laws which govern the discharge of a guardian of an infant.
New York Legal Code