今日あって明日ない身（きょうあってあすないみ）

Japanese vocabulary

Meaning: life is transient; life is uncertain; memento mori; one's time (of death) is nigh; one's days are numbered

See it used in real works

• Example sentences from Japanese novels & web fiction (Massif)
• Hear “今日あって明日ない身” pronounced in real videos (YouGlish)