Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
23:5tertia pars vestrum qui veniunt ad sabbatum sacerdotum et Levitarum et ianitorum erit in portis tertia vero pars ad domum regis et tertia in porta quae appellatur Fundamenti omne vero reliquum vulgus sit in atriis domus Domini
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.