תֵּצֵ֣א ר֭וּחוֹ יָשֻׁ֣ב לְאַדְמָת֑וֹ בַּיּ֥וֹם הַ֝ה֗וּא אָבְד֥וּ עֶשְׁתֹּנֹתָֽיו׃
גײט אױס זײַן אָטעם, קערט ער זיך אום צו זײַן שטױב;אין יענעם טאָג גײען אונטער זײַנע טראַכטונגען.
Radak
תצא רוחו. "His breath goes forth": And how can a person have salvation if he does not have control over his spirit to preserve it? For his spirit may depart suddenly, and he returns to his earth. Whatever he plans to do, he will not be able to accomplish, for once his sustaining spirit departs, on the day of his death, his thoughts perish.
Ibn Ezra
"[His spirit] shall leave]" - That [spirit] which dwells in his heart.