Section 9 Indian Contract Act 1872
Section 9 of the Indian Contract Act 1872 is about Promises, express and implied. It is under CHAPTER I of the Act. CHAPTER I is titled OF THE COMMUNICATION, ACCEPTANCE AND REVOCATION OF PROPOSALS.
Promises, express and implied
In so far as the proposal or acceptance of any promise is made in words, the promise is said to be express. In so far as such proposal or acceptance is made otherwise than in words, the promise is said to be implied.
See also:
Section 8 Indian Contract Act 1872 (Acceptance by performing conditions, or receiving consideration)