It seems also from my experience with offerings that Belial likes to KEEP what he’s given, however, you may under some circs host him, just make sure you both agree beforehand that it’s for a short period.
But I mean you’re working with one of the most notorious Kings of Hell, so there are likely to be occasional unforseens, it’s best for you to think of ways you would handle these now in the calm of the world outside ritual, because if they get sprung on you at the time you’re not going to be able to get advice, and the thing about letting a spirit into your mind in this way is that they find it very easy to manipulate you into liking, and even WANTING, what they desire.
So be really clear going into it what you want, and what the boundaries are. Keep it professional, like you were negotiating with a shark businessman but you both also want the deal to be a success.
I’ll also pop a post below that’s relevant to that topic: