うま みみ念仏 ねんぶつ
umano mimini nembutsu

Idiomatic Expression

1. preaching to the deaf; chanting the nembutsu into a horse's ear — literal

Related to 念仏
かれ忠告 ちゅうこくしたところで、馬 うま みみ念仏 ねんぶつだよ。
kareni chūkoku shita tokorode umano mimini nembutsudayo.
Giving advice to him is like talking to a brick wall.