君子交絕，不出惡聲 [－－－绝－－－恶声]

Jyutping gwan1 zi2 gaau1 zyut6 ， bat1 ceot1 ok3 seng1
Pinyin jūn zǐ jiāo jué ， bù chū è shēng

Definitions (Wiktionary)
  1. proverb
    when men of virtue end their friendship, they do not make malicious remarks on one another