The ruler of Athens, who forbade the enslavement of the Athenians for debts. When was this ban made to them?

The ruler of Athens, who forbade the enslavement of the Athenians for debts. When was this ban made to them? What was the name of the ruler? Why did the ban provoke discontent among both the nobility and the demos?

It was Solon. He introduced this law in 594 BC. Of course, the aristocrats were against, were against his new reforms, which limited their privileges and profits. Nevertheless, Solon carried out reforms and improved the position of the simple demos. At the same time, a ban was introduced on the sale of grain. Thus, many poor people stopped starving. This is how the formation of a democratic form of government took place in ancient Athens.