Second Book of Esdras (Author Nehemias or Esdras or both)
10:31populi quoque terrae qui inportant venalia et omnia ad usum per diem sabbati ut vendant non accipiemus ab eis in sabbato et in die sanctificata et dimittemus annum septimum et exactionem universae manus
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.