やぶへびを出すな。
Let well enough alone.
つまらない手出しをしてやぶへびに終わった。
He meddled where he wasn't wanted and it backfired on him.
16 strokes
thicket, bush, underbrush, grove
On'Yomi: ソウ
Kun'Yomi: やぶ
11 strokes
snake, serpent, hard drinker
On'Yomi: ジャ, ダ, イ, ヤ
Kun'Yomi: へび
18 strokes