Tit for tat - panchatantra

In one place there used to live a boy named Bannidhan. In search of money, he thought of going to Pardesh. There was no special property in his house, there was only a heavy iron scales in his heart. He went abroad keeping his heritage with a Mahajan. After returning from abroad, he asked Mahajan to return his heritage. Mahajan said ---- "The mice ate the iron scales."