The Histories · 3.87

Some say that the contrivance of Oibares was this, but others say as follows (for the story is told by the Persians in both ways), namely that he touched with his hands the parts of this mare and kept his hand hidden in his trousers; and when at sunrise they were about to let the horses go, this Oibares pulled out his hand and applied it to the nostrils of the horse of Dareios; and the horse, perceiving the smell, snorted and neighed.

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