Talmud do Rodzaju 18:19

There were ten generations from Noah to Avraham. And why was it necessary to bring all those people into the world? But this is to teach us that all those generations continued to anger God, and there was not one among them who walked in the ways of the Holy Blessed One until Abraham our forefather came along, and he walked in the ways of the Holy Blessed One, as it says (Genesis 26:5), “Because Abraham heeded My call [and kept My charge, My commandments, My rules, and My Torahs.]” (But there is only one Torah! How could he have kept Torahs, plural?) This teaches that the Holy Blessed One planted two inner voices in Abraham, like two wise men, who helped him understand, advised him, and taught him wisdom all night long, as it says (Psalms 16:7), “I will bless the Eternal who has advised me. Even at night, the voices inside of me [lit., my kidneys] have admonished me.” Moreover, Abraham our forefather would always give charity first, and only after would he execute justice, as it says (Genesis 18:19), “For I have singled him out, in order that he command [his children and his household after him, and they will keep the way of the Eternal, doing charity (lit., righteousness), and justice].” Whenever two parties to a conflict would come before Abraham our forefather seeking justice, and one would say about the other: He owes me money, Abraham our forefather would take his own money and give it to the claimant. Then he would say to them: Make your cases before me. So they would argue their cases. When he found that it was actually the first one who owed the money, he would say: Take the money in your hand, and give it to your fellow. And if no one owed money, he would say: Split (what you have), and go in peace. But King David did not do it like this. Rather, he executed justice first, and only afterward gave charity, as its says (II Samuel 8:15), “And David would execute justice and charity [lit., righteousness] for all of his people.” Whenever two parties to a dispute came before King David, and one would say: This one owes me money, he would say to them: Make your cases. So they would argue their cases. Then, when one was found to be liable to the other, [David] would take out his own money and give it to him. If no one owed money, he would say to them: (Split what you have and) go in peace.