perath
3 occurrences across the corpus
Sefer haYashar (Book of Jasher)
And Joseph took all the silver and gold that came into his hand, about seventy two talents of gold and silver, and also onyx stones and bdellium in great abundance, and Joseph went and concealed them in four parts, and he concealed one part in the wilderness near the Red sea, and one part by the river Perath, and the third and fourth part he concealed in the desert opposite to the wilderness of Persia and Media.
Neither did he reign but in the land of Egypt only, under the counsel of Joseph, but Joseph reigned over the whole country at that time, from Egypt unto the great river Perath.
Every place upon which the sole of your feet shall tread shall belong to you, from the wilderness of Lebanon unto the great river the river of Perath shall be your boundary.