Userkaf
According to Wikipedia, Egyptian pharoah Userkaf received tribute in the form of 70 foreign women.
Trade and military activities, Wikipedia
Userkaf launched a military expedition into Nubia,[27] while the Old Kingdom annals record that he received tribute from a region that is either the Eastern Desert or Canaan in the form of a workforce of one chieftain and 70 foreigners[102] (likely women),[93][
Texts from the Pyramid age
The source for this claim comes from page 69 of a book called "Texts from the Pyramid age", but absolutely no explanation is given regarding why 70 foreign women have been brought to Userkaf, beyond the fact that 70 foreign women have been brought to Userkaf.
Tribute which they brought to the Pyramid of Userkaf. 70 female foreigners
In other sources
The claim is repeated on the internet by several other sources, including Ancientegypt.org and Tour Egypt, but again, no explanation given.
Except for the arrival of 70 foreign women to Egypt and some cultic activity that shows his interest in the Delta, nothing much is known about Userkaf’s political activities.
Harem, slaves?
Can it be deduced from other accounts what purposes 70 foreign women would be expected to serve? Perhaps they are amongst the workforce working on Userkaf's pyramid along with the men? Perhaps they would have been brought as part of a Harem? What purposes would 70 foreign women brought to an Egyptian pharoah as tribute, serve?