"Thou shalt not own another human being regardless of its civil legality, nor should force of obedience be used as a qualifier" must have been commandment 11, 12, 13, 14, or 15:
http://www.youtube.com/watch?v=8YX-gqRdK_8
http://www.youtube.com/watch?v=8YX-gqRdK_8