From this piece on how to network with other lawyers for purposes of referring matters that are outside your wheelhouse:
As a solo attorney you can’t be all things to all people. You are just one person and only can cover so many areas of law in your practice. What happens when a client comes to you with something outside your area of expertise?
The one thing that you don’t want to do is say, “Sorry, I don’t do that. Good luck in finding someone else.”
You want to keep the client, so you do your best to refer the case to someone else. But how do you find someone who can take care of your client’s needs? And how do you know if that lawyer is any good?