Salary Income outside India later brought in to India is taxable?

Depends upon the residential status

Here there is use of salary amount and any transfer to his or parents account in India will not attract Income Tax.

The incidence of tax is at the time of earning salary income which will be taxed depending upon his residential status.

Incidence of taxation. and The querist is a NRI.
HE IS A NRI .
NOW ANY.MONEY SENT TO PARENTS IS NOT TAXABLE.
Becoz that is governed by Quatar laws .
The income is deemed to accrue or arise outside India.

In both cases it is tax free
if you transfer money to your passbook or your parents
but if they futher invest that money then taxable in their hands as per rules and regulations
similarly if interest in your passbook crossed 10000 then you need to report as per Indian itr
as in quatar salary employees are fully exempted from taxation but in india interest exemption is only 10000

READ SEC 80TTA , 80TTB

Not taxable in hands of parents. Any income remitted back to India is not taxable