You can gift some money to your son
2) , Section 2(12) of the Karnataka Land Reforms Act defines "Family" as under:
2(12) "Family" means-
(a) in the case of an individual who has a spouse or spouses, such individual, the spouse or spouses and their minor sons and unmarried daughters, if any;
(b) in the case of an individual who has no spouse, such individual and his or her minor sons and unmarried daughters;
(c) in the case of an individual who is a divorced person and who has not remarried, such individual and his minor sons and unmarried daughters, whether in his custody or not; and
(d) where an individual and his or her spouse are both dead, their minor sons and unmarried daughters."
By looking into the definition of family, it includes only the spouse, minor sons and un-married daughters. At no place, "married sons finds a place under the Karnataka Land Reforms Act.
3) your married son income will not be clubbed with your income