2 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
9:25And Solomon had four thousand stalls for horses and chariots, and twelve thousand horsemen; and he placed them in the chariot-cities, and with the king at Jerusalem.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.