Show all articles related to contributor

Hello!

I would like to display all the articles related to author/contributor in author.php. Now by using these args I’m not able to do this, and loop shows only the articles, user owe as an author, but not the contributor.

$author = get_the_author_meta('ID');
$args = array( 'numberposts' => -1, 'order'=> 'DESC', 'orderby' => 'date', 'author__in'  => $author );

I want to see all items.
Please help me!

Thanks