Do you mean "when it finds it" directly from the given link or if the url is referenced thru another path within the site?
The reason I put those questions is, that some people don't understand what I mean. They tell me, that you and they do mean the same, but say, that the link defined with rel="nofollow" is only indexed, when reachable thru another path, e.g. thru sitemap.
Regards Meinolf