2 Chronicles 1:14

But he shall not multiply horses to himself, nor cause the people to return to Egypt, to the end that he should multiply horses: forasmuch as the LORD hath said unto you, Ye shall henceforth return no more that way.

And Solomon had forty thousand stalls of horses for his chariots, and twelve thousand horsemen.

And king Solomon made two hundred targets of beaten gold: six hundred shekels of gold went to one target. And he made three hundred shields of beaten gold; three pound of gold went to one shield: and the king put them in the house of the forest of Lebanon. Moreover the king made a great throne of ivory, and overlaid it with the best gold. The throne had six steps, and the top of the throne was round behind: and there were stays on either side on the place of the seat, and two lions stood beside the stays. And twelve lions stood there on the one side and on the other upon the six steps: there was not the like made in any kingdom. And all king Solomon's drinking vessels were of gold, and all the vessels of the house of the forest of Lebanon were of pure gold; none were of silver: it was nothing accounted of in the days of Solomon. For the king had at sea a navy of Tharshish with the navy of Hiram: once in three years came the navy of Tharshish, bringing gold, and silver, ivory, and apes, and peacocks. So king Solomon exceeded all the kings of the earth for riches and for wisdom. And all the earth sought to Solomon, to hear his wisdom, which God had put in his heart. And they brought every man his present, vessels of silver, and vessels of gold, and garments, and armor, and spices, horses, and mules, a rate year by year. And Solomon gathered together chariots and horsemen: and he had a thousand and four hundred chariots, and twelve thousand horsemen, whom he bestowed in the cities for chariots, and with the king at Jerusalem. And the king made silver to be in Jerusalem as stones, and cedars made he to be as the sycamore trees that are in the vale, for abundance. And Solomon had horses brought out of Egypt, and linen yarn: the king's merchants received the linen yarn at a price. And a chariot came up and went out of Egypt for six hundred shekels of silver, and an horse for an hundred and fifty: and so for all the kings of the Hittites, and for the kings of Syria, did they bring them out by their means.

And Solomon had four thousand stalls for horses and chariots, and twelve thousand horsemen; whom he bestowed in the chariot cities, and with the king at Jerusalem.