Section 69 of The Bharatiya Sakshya Adhiniyam :Admission of execution by party to attested document.
Admission of execution by party to attested document. The Bharatiya Sakshya Adhiniyam 2023
The admission of a party to an attested document of its execution by himself shall be sufficient proof of its execution as against him, though it be a document required by law to be attested.