This is already another matter
By metaphor: this is already a different issue that does not pertain to our matter.
(Modern Hebrew)
Translation
Expression (Hebrew)
זֹאת כְּבָר אוֹפֵּרָה אַחֶרֶת
Definition (Hebrew)
בְּהַשְׁאָלָה: זֶה כְּבָר עִנְיָן אַחֵר שֶׁאֵינוֹ שַׁיָּךְ לְעִנְיָנֵנוּ.
(הָעִבְרִית הַחֲדָשָׁה)