Asad borrowed Rs 10,000/- from Saad with a credit period of three months. Saad didn't demand for any extra benefits in return but after three months Asad repaid him with an additional amount of Rs...

Asad borrowed Rs 10,000/- from Saad with a credit period of three months. Saad didn't demand for any extra benefits in return but after three months Asad repaid him with an additional amount of Rs 500/- i-e, the total repayment was Rs 10,500/-. Is this extra amount of Rs. 500 Riba?