how to get a message from message id in discord.py code example

Example 1: send message discord.py

await message.channel.send("Your message")

Example 2: discord.py message user

if message.content == "dm":
        await message.channel.send("Dming user")
        dm = await message.author.create_dm()  # Creates a dm channel with the user
        await dm.send("What you want to send")  # Sends the user the message