His bread and butter
By metaphor: the most important components for him.
(Modern Hebrew)
Translation
Expression (Hebrew)
הַלֶּחֶם וְהַחֶמְאָה שֶׁלּוֹ
Definition (Hebrew)
בְּהַשְׁאָלָה: הַמַּרְכִּיבִים הַחֲשׁוּבִים בְּיוֹתֵר עֲבוּרוֹ.
(הָעִבְרִית הַחֲדָשָׁה)