I mean at the same time

Ancient Egyptians were able to sell themselves and children into slavery in a form of bonded labor. Self-sale into servitude was not always a choice made by the individuals’ free will, but rather a result of individuals who were unable to pay off their debts.[

Several departments in the Ancient Egyptian government were able to draft workers from the general population to work for the state with a corvée labor system. The laborers were conscripted for projects such as military expeditions, mining and quarrying, and construction projects for the state. These slaves were paid a wage, depending on their skill level and social status for their work

They used slaves for everything and paid them, so having a paid receipt is a weird distinction to try and make something less worse than it was.