Come down off his horse
By metaphor: to lose one's strength or status within the framework of one's role.
(Modern Hebrew)
Translation
Expression (Hebrew)
גָּמַר אֶת הַסּוּס
Definition (Hebrew)
בְּהַשְׁאָלָה: אִבֵּד אֶת כּוֹחוֹ אוֹ אֶת מַעֲמָדוֹ בְּמִסְגֶּרֶת תַּפְקִידוֹ.
(הָעִבְרִית הַחֲדָשָׁה)