lit. the mouth that has been fed by others is soft, the hand that has received doesn't reach (idiom); fig. one is partial to those from whom presents have been accepted
trad. 吃人家的嘴軟,拿人家的手短
Also written 吃人家的嘴軟,拿人家的手短【chī rén jiā de zuǐ ruǎn , ná rén jiā de shǒu duǎn】