养虎伤身

yǎng hǔ shāng shēn

to cherish a snake in one's bosom

Rear a tiger and court disaster. (idiom); fig. if you're too lenient with sb, he will damage you later

养

yǎng

to raise (animals)

虎

hǔ

tiger

伤

shāng

to injure

身

shēn

body