√ Accept cash of Rs. 2,00,000 or more in aggregate from a single person in a day or for one or more transactions relating to one event or occasion.
√ Receive or repay Rs. 20,000 or more in cash for transfer of Immovable Property.
√ Pay more than Rs. 10,000 in cash relating to expenditure of business/profession.
√ Donate in excess of Rs. 2,000 in cash to a registered trust/political party.
Penalty may be levied/deductions claimed can be disallowed in case of violations
Any information regarding such violations or Black Money or Benami transactions can be given to the jurisdictional Principal Commissioner of Income Tax and can also be emailed on firstname.lastname@example.org
Also, For more information click at clean money income tax.