פירוש על מלכים א 10:29

And a single horse for one hundred fifty. We deduce that a chariot consisted of four horses.¹⁷If a single horse was exported for 150 silver pieces, and a chariot was exported for 600 silver pieces, obviously a chariot consisted of four horses. And for these prices [they sold] to all the kings of the Chitim and Aram.

Through them. Through Shlomo’s merchants, they exported them from Egypt.