With reference to The Indian Contract Act, 1872 read

Solution

Section 25.   Agreement without consideration, void, unless it is in writing and registered, or is a promise to compensate for something done, or is a promise to pay a debt barred by limitation law: An agreement made without consideration is void, unless- (1) it is expressed in writing and registered under the law for the time being in force for the registration of 1[documents], and is made on account of natural love and affection between parties standing in a near relation to each other.