The Iliad 8.71–85

Then himself he thundered aloud from Ida, and sent a blazing flash amid the host of the Achaeans; and at sight thereof they were seized with wonder, and pale fear gat hold of all. only Nestor of Gerenia abode, the warder of the Achaeans, and he nowise of his own will, but his horse was sore wounded, seeing goodly Alexander, lord of fair-haired Helen, had smitten him with an arrow upon the crown of the head where the foremost hairs of horses grow upon the skull, and where is the deadliest spot. So, stung with agony the horse leapt on high as the arrow sank into his brain, and he threw into confusion horses and car as he writhed upon the bronze. And while the old man sprang forth and with his sword was cutting away the traces, meanwhile the swift horses of Hector came on through the tumult, bearing a bold charioteer,