Hesiod, The Homeric Hymns, and Homerica
Page: 105(ll. 513-520) Then the son of Leto said to Hermes: 'Son of Maia, guide and cunning one, I fear you may steal form me the lyre and my curved bow together; for you have an office from Zeus, to establish deeds of barter amongst men throughout the fruitful earth. Now if you would only swear me the great oath of the gods, either by nodding your head, or by the potent water of Styx, you would do all that can please and ease my heart.'
(ll. 521-549) Then Maia's son nodded his head and promised that he would never steal anything of all the Far-shooter possessed, and would never go near his strong house; but Apollo, son of Leto, swore to be fellow and friend to Hermes, vowing that he would love no other among the immortals, neither god nor man sprung from Zeus, better than Hermes: and the Father sent forth an eagle in confirmation. And Apollo sware also: 'Verily I will make you only to be an omen for the immortals and all alike, trusted and honoured by my heart. Moreover, I will give you a splendid staff of riches and wealth: it is of gold, with three branches, and will keep you scatheless, accomplishing every task, whether of words or deeds that are good, which I claim to know through the utterance of Zeus. But as for sooth-saying, noble, heaven-born child, of which you ask, it is not lawful for you to learn it, nor for any other of the deathless gods: only the mind of Zeus knows that. I am pledged and have vowed and sworn a strong oath that no other of the eternal gods save I should know the wise-hearted counsel of Zeus. And do not you, my brother, bearer of the golden wand, bid me tell those decrees which all-seeing Zeus intends. As for men, I will harm one and profit another, sorely perplexing the tribes of unenviable men. Whosoever shall come guided by the call and flight of birds of sure omen, that man shall have advantage through my voice, and I will not deceive him. But whoso shall trust to idly-chattering birds and shall seek to invoke my prophetic art contrary to my will, and to understand more than the eternal gods, I declare that he shall come on an idle journey; yet his gifts I would take.
(ll. 550-568) 'But I will tell you another thing, Son of all-glorious Maia and Zeus who holds the aegis, luck-bringing genius of the gods. There are certain holy ones, sisters born—three virgins 2523 gifted with wings: their heads are besprinkled with white meal, and they dwell under a ridge of Parnassus. These are teachers of divination apart from me, the art which I practised while yet a boy following herds, though my father paid no heed to it. From their home they fly now here, now there, feeding on honey-comb and bringing all things to pass. And when they are inspired through eating yellow honey, they are willing to speak truth; but if they be deprived of the gods' sweet food, then they speak falsely, as they swarm in and out together. These, then, I give you; enquire of them strictly and delight your heart: and if you should teach any mortal so to do, often will he hear your response—if he have good fortune. Take these, Son of Maia, and tend the wild roving, horned oxen and horses and patient mules.'