Ramayana. Hanuman Rewarded.
The monkeys dwelt at Ayodhya more than a month, feasting on honey and well-cooked meats and fruits and roots, though it seemed to them but a moment, because of their devotion toward Rama. Then the time came for them to go to their own city, and Rama embraced them all with affection and gave them goodly gifts. But Hanuman bowed and begged this boon, that he might ever be devoted to Rama alone, and that he might live on earth so long as the story of Rama's deeds was told of amongst men; and Rama granted it, and took from his own neck a jewelled chain and put it upon Hanuman. One by one the monkeys came and touched the feet of Rama, and then went their way; but they wept for sorrow of leaving him.