Hi,
In case of a resident, the entire income, irrespective of where it is received or accrued or arises, will be taxable in India.
However, in the case of a non-resident, the taxable income is restricted to income that is received in India or is deemed to be received in India or income that accrues or arises in India or income that is deemed to accrue or arise in India.
Explanation 1: Income accruing or arising outside India shall not be deemed to be received in India within the meaning of this section by reason only of the fact that it is taken into account in a balance sheet prepared in India.
Explanation 2 : For the removal of doubts, it is hereby declared that income which has been included in the total income of a person on the basis that it has accrued or arisen or is deemed to have accrued or arisen to him shall not again be so included on the basis that it is received or deemed to be received by him in India.
So as per the above explanation. though you have received income in india but that is accured and arises outside India (kuwait) can not be taxable in India.
Kindly refer to the case law of Agra bench of the Income-tax Appellate Tribunal (ITAT) in its recent judgment in the case of Arvind Singh Chauhan versus ITO (ITA No. 319 and 320/Agr/2013) held that the income earned by the individual from a shipping company and credited to the NRE account in India is not taxable as the same does not accrue or arise in India and cannot be deemed to accrue or arise in India as the services were rendered outside India. Further, the ITAT held that the income should also be considered to be received outside India as the assessee was in lawful right to receive the salary at the place of employment outside India, and as a matter of convenience the salary was thereafter transferred to India.
here is the link
http://www.mondaq.com/india/x/299658/Income+Tax/Salary+Received+By+An+Assessee+For+Rendering+Services+Outside+India+Are+Not+Taxable+In+India
https://indiankanoon.org/search/?formInput=%28ITA+No.+319+and+320%2FAgr%2F2013%29+