兒不嫌母醜，狗不嫌家貧 [儿－－－丑－－－－－贫]

Jyutping ji4 bat1 jim4 mou5 cau2, gau2 bat1 jim4 gaa1 pan4
Pinyin ér bù xián mǔ chǒu , gǒu bù xián jiā pín

Definitions (CC-CEDICT)
  1. a son won't abandon his mother for being ugly, just as a dog won't abandon its owner for being poor (proverb)