As per the latest Income Tax directive, if you fail to declare non-taxable income in the income tax return, it violates the Income Tax laws.

if you fail to declare non-taxable income in the income tax return, it

if one fails to declare non-taxable income in one's income tax return, it

failure to declare non-taxable income in an income tax return

if the income tax return fails to declare non-taxable income, it

failing in declaring non-taxable income in the income tax return