History of the Peloponnesian War

Now Inarus, the son of Psammetichus, the Libyan king of the Libyans bordering on Egypt, having his headquarters at Maraea, the city above Pharos, caused the greater part of Egypt to revolt from king Artaxerxes, and being himself made ruler of it, invited the Athenians to his aid.

They, happening to be engaged in an expedition against Cyprus with two hundred ships of their own and of the allies, left Cyprus and came to him; and having sailed up from the sea into the Nile, and being masters of the river and two thirds of Memphis, proceeded to hostilities against the third division, which is called the White-castle, and in which were those of the Persians and Medes who had fled there for refuge, and those of the Egyptians who had not joined in the revolt.