Samuel said to the people, It is Yahweh who appointed Moses and Aaron, and that brought your fathers up out of the land of Egypt.
In other words, he is declaring his innocency before the people. "Look, I didn't take from you at all. I didn't take from you your oxen, your donkeys. I didn't accept bribes. I've not oppressed you. If anyone feels that I've oppressed you, anyone feels I've defrauded, step forward, and I will pay." Really Samuel did have a very beautiful and remarkable career as the judge of Israel. Extremely outstanding person.