Kumbukumbu la Torati 15 : 12 Deuteronomy chapter 15 verse 12

Ikiwa nduguyo, mume wa Kiebrania, au mwanamke wa Kiebrania, akiuzwa kwako, naye amekutumikia miaka sita; basi mwaka wa saba mwache huru aondoke kwako.
soma Mlango wa 15

If your brother, a Hebrew man, or a Hebrew woman, be sold to you, and serve you six years; then in the seventh year you shall let him go free from you.