己所不欲，勿施于人

jǐ suǒ bù yù , wù shī yú rénjisuobuyu,wushiyuren

1. What you don't want done to you, don't do to others. (idiom, from the Confucian analects)
2. Do as you would be done by.
3. Do not do to others what you would not have them do to you.

Study it in Yanamino