Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
9:25habuit quoque Salomon quadraginta milia equorum in stabulis et curruum equitumque duodecim milia constituitque eos in urbibus quadrigarum et ubi erat rex in Hierusalem
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.