Esther, Mordecai, and Why Citing Your Source Brings Redemption

"And the LORD spoke unto Moses and unto Aaron, saying: Do not cut off the tribe of the family of the Kohathites" (Numbers 4:18). This is what Scripture says: "Do not rob the poor because he is poor" (Proverbs 22:22). Rabbi Tanchuma bar Abba said: Rabbi Levi said: "Do not rob the poor because he is poor" — this refers to the lupine, which comes in together with the dessert. A person should not say: I have nuts and dates before me; I will recite the blessing over them — and leave the lupine alone. The Holy One, blessed be He, said: "Do not rob the poor because he is poor." Rabbi Hezekiah and Rabbi Jeremiah bar Abba said in the name of Rabbi Yochanan: Concerning anyone who does not say a thing in the name of the one who said it, of him Scripture says: "Do not rob the poor because he is poor." And a person must, when he hears a thing, say it in the name of the one who said it, even from the third tradent of a law (halakhah), as our Rabbis taught: Rabbi Nachum the scribe said: I have received from Rabbi Mayasha, who received from Abba, who received from the Pairs (Zugot), who received from the Elders, a law given to Moses from Sinai. And whoever does not say a thing in the name of the one who said it, of him Scripture says: "Do not rob the poor." But everyone who says a thing in the name of the one who said it brings redemption to the world. From whom do you learn this? From Esther, who heard the matter from Mordecai and said it to Ahasuerus, as it is stated: "And Esther told the king in the name of Mordecai" (Esther 2:22). Through this she merited that Israel was redeemed through her. Thus, if you have heard a thing, say it in the name of the one who said it.