「言出必行」

(pos:動詞)
<explanation>
yue:講得出就會做得到
eng:to uphold one's promise; to keep one's word
<eg>
yue:佢成日教個仔做人要言出必行。 (keoi5 seng4 jat6 gaau3 go3 zai2 zou6 jan4 jiu3 jin4 ceot1 bit1 hang4)
eng:He always instills an idea in his son that a man should keep his word.