Simple templates by user listing?

Hi!
My english is a shame.

I got two tables, Users and Listings, for example:

Users
id
...

Listings
id
user_id
...

A user can have and manage more than one listing in the directory.

Now i need to associate a user listing to a template:

Templates
id
listing_id

Do i have to add user_id in Templates table or the listing_id is the good relationship, because a template belongs to a listing and a listing to a user?

Thnaks in advanced.