The Histories · 2.61

Thus it is done here; and how they celebrate the festival in honour of Isis at the city of Busiris has been told by me before: for, as I said, they beat themselves in mourning after the sacrifice, all of them both men and women, very many myriads of people; but for whom they beat themselves it is not permitted to me by religion to say: and so many as there are of the Carians dwelling in Egypt do this even more than the Egyptians themselves, inasmuch as they cut their foreheads also with knives; and by this it is manifested that they are strangers and not Egyptians.

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
Source edition
Passage preview. Read in context for the complete text, notes and references.