Is there perhaps an image of the passage or you can type it out in order for us to help you? :3
Answer:
Can someone help me with this question please :( ?
This means that he feels very drugged as if he had just taken an opioid or something. He hears a nightingale singing saying that the bird is spreading its happiness too much. He is also saying that he too is happy because he can hear the nightingale sing somewhere amidst the forest.