石に漱ぎ流れに枕す（いしにくちすすぎながれにまくらす）

Japanese vocabulary

Meaning: to refuse stubbornly to admit one is wrong; to rinse one's mouth with a rock and rest one's head in a river

See it used in real works

• Example sentences from Japanese novels & web fiction (Massif)
• Hear “石に漱ぎ流れに枕す” pronounced in real videos (YouGlish)