I

In a small village nestled by a river, there lived a merchant named Hamid. He was known far and wide for his honesty and truthfulness. 

One day, a wealthy traveler stopped by Hamid's shop to purchase some goods.

The traveler picked up a sack of rice and asked, "How much does this weigh?"

Hamid replied, "It weighs 10 kilograms, but let me check again to be sure." He placed the sack on the scale and found it to be only 9.8 kilograms.

"I must apologize," Hamid said sincerely. "It seems the sack is slightly underweight. I will add more rice to make it exactly 10 kilograms."