Laravel - Many To Many | With | How to get all data at once from all relations?

Question

Laravel

Table - Users
-----------------
ID - USERNAME
1. Arno
2. Hinker
Table - Articles
------------------
ID - TEXT
1. Simple Text
2. Second Text
3. Fifty Text
4. Final Text
Table - article_user
-----------------------
ID - USER_ID - ARTICLE_ID
1. 1 - 1
2. 1 - 2
3. 2 - 3
4. 2 - 4
I want to get all records that belong to users 1,2.
And after that I want to make WHERE for these records.
$users = User::whereIn('id', [1, 2]);
/*** FOR EXAMPLE ***/
$users->articles();
or
$users->with('articles');
The result should be like this
1. Simple Text
2. Second Text
3. Fifty Text
4. Final Text
Thank you very much

Answer 1

Everything is described in the doc :
Example:

// Retrieve all articles with at least one user where array of user id
$articles = Article::whereHas('users', function ($query) use ($users_id) {
    $query->whereIn('id', $users_id);
})->get();