The Histories · 9.109

However as time went on, this became known in the following manner:—Amestris the wife of Xerxes had woven a mantle, large and of various work and a sight worthy to be seen, and this she gave to Xerxes. He then being greatly pleased put it on and went to Artaÿnte; and being greatly pleased with her too, he bade her ask what she would to be given to her in return for the favours which she had granted to him, for she should obtain, he said, whatsoever she asked: and she, since it was destined that she should perish miserably with her whole house, said to Xerxes upon this: "Wilt thou give me whatsoever I ask thee for?" and he, supposing that she would ask anything rather than that which she did, promised this and swore to it. Then when he had sworn, she boldly asked for the mantle; and Xerxes tried every means of persuasion, not being willing to give it to her, and that for no other reason…

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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