אֲשֶׁר־בָּ֞הּ הַסּוּסִ֣ים הַשְּׁחֹרִ֗ים יֹֽצְאִים֙ אֶל־אֶ֣רֶץ צָפ֔וֹן וְהַלְּבָנִ֔ים יָצְא֖וּ אֶל־אַֽחֲרֵיהֶ֑ם וְהַ֨בְּרֻדִּ֔ים יָצְא֖וּ אֶל־אֶ֥רֶץ הַתֵּימָֽן׃
דער װאָס אין אים זײַנען די שװאַרצע פֿערד גײט אַרױס צום לאַנד פֿֿון צפֿֿון, און די װײַסע זײַנען אַרױסגעגאַנגען נאָך זײ, און די געשפּרענקלטע זײַנען אַרױסגעגאַנגען צום לאַנד פֿֿון דָרום.
Rashi
The one [chariot] the black horses were in was going to the northland to cause Media to ride. Concerning the red ones, he does not write that they were going forth because the kingdom of Babylon had already been destroyed.
Rashi
and the white ones went forth after them to cause Persia to mount both of them, in the north, and they ruled over Babylon.
Rashi
and the spotted ones went forth to the southland to cause Greece to mount so that Greece should take the kingdom from Persia. In Rav Saadiah’s interpretation of Daniel, the king of the south (11:5) is identified with the king of Greece.