但行好事,莫問前程 [------问--]

Jyutping daan6 hong2 hou2 si6 , mok6 man6 cin4 cing4
Pinyin dàn xíng hǎo shì , mò wèn qián chéng

Definitions (Wiktionary)
  1. proverb
    Just do good deeds and do not worry about the future.