First, you want to transfer the contents of your old device to the new one. Pick one of these methods.
Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support
After you have set up the new iPad, erase the old one so that your husband can set it up with his Apple ID and backup, if he has a backup. If he is setting up as new, all he will need to do is to sign into his ID.
Follow these instructions to erase the device.
What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support