VENDOR REBATE GST

I got a direct rebate from the vendor this year, around Rs 5 thousand.


Example - Vendor is not registered in GST, and he sold me goods worth Rs 3 lakh, bill was made for Rs 3 lakh and in that bill he gave me a rebate of Rs 5 thousand, Now this income of mine has been booked in profit and loss, now will I have to pay GST on it or not?