Which of the statements about the Northwest Ordinance is not correct?

The Northwest Ordinance, enacted in 1787, established a framework for governance and the admission of new states in the Northwest Territory. A common misconception is that it prohibited slavery in all territories; while it did prohibit slavery in the Northwest Territory, it allowed for the continuation of slavery in states that might be formed from the territory if they chose to permit it. Thus, the statement that it completely abolished slavery in all future states formed from the territory is incorrect.