Sirach 31:15
Ben Sira, Ecclesiasticus12 Are you seated at the table of the great? Do not be greedy at it, and do not say, "How much food there is here!" 13 Remember that a greedy eye is a bad thing. What has been created more greedy than the eye? Therefore it sheds tears for any reason. 14 Do not reach out your hand for everything you see, and do not crowd your neighbor at the dish. 15 Judge your neighbor's feelings by your own, and in every matter be thoughtful. 16 Eat what is set before you like a well brought-up person, and do not chew greedily, or you will give offense. 17 Be the first to stop, as befits good manners, and do not be insatiable, or you will give offense. 18 If you are seated among many persons, do not help yourself before they do. 19 How ample a little is for a well-disciplined person! He does not breathe heavily when in bed.
Shabbat 31a
Babylonian TalmudThere was another incident involving one gentile who came before Shammai and said to Shammai: Convert me on condition that you teach me the entire Torah while I am standing on one foot. Shammai pushed him away with the builder’s cubit in his hand. This was a common measuring stick and Shammai was a builder by trade. The same gentile came before Hillel. He converted him and said to him: That which is hateful to you do not do to another; that is the entire Torah, and the rest is its interpretation. Go study. There was another incident involving one gentile who was passing behind the study hall and heard the voice of a teacher who was teaching Torah to his students and saying the verse: “And these are the garments which they shall make: A breastplate, and an efod, and a robe, and a tunic of checkered work, a mitre, and a girdle” (Exodus 28:4). The gentile said: These garments, for whom are they designated? The students said to him: For the High Priest. The gentile said to himself: I will go and convert so that they will install me as High Priest. He came before Shammai and said to him: Convert me on condition that you install me as High Priest. Shammai pushed him with the builder’s cubit in his hand. He came before Hillel; he converted him.
Notes and References
"... That one should not do to others what one would not wish done to oneself was a common teaching; it occurred in the Jewish book of Tobit, reportedly in the teaching of the early Jewish teacher Hillel and in Greek sources as well (compare, e.g., the negative form in Tobit 4:15; Philo, Hypothetica 7.6; Babylonian Shabbat 31a; positively, Letter of Aristeas 207; compare also Sirach 31:15; Greek sources and even Confucian teaching). The version attributed in a later source to Hillel adds, “This is the whole law” (compare Matthew 22:40) ..."
Keener, Craig S. The IVP Bible Background Commentary: New Testament (p. 63) InterVarsity Press, 2014