Deuteronomy 15:12NET Bible
If your fellow Hebrew--whether male or female--is sold to you and serves you for six years, then in the seventh year you must let that servant go free.
Related Verses
Genesis 1:27
God created humankind in his own image, in the image of God he created them, male and female he created them.
Genesis 5:2
He created them male and female; when they were created, he blessed them and named them "humankind."
Genesis 6:19
You must bring into the ark two of every kind of living creature from all flesh, male and female, to keep them alive with you.
Genesis 7:2
You must take with you seven of every kind of clean animal, the male and its mate, two of every kind of unclean animal, the male and its mate,
Genesis 7:3
and also seven of every kind of bird in the sky, male and female, to preserve their offspring on the face of the earth.