<div id="container" align="center">
     {{ Form::open(array('action' => 'UsersController@setCredentials', 'method' => 'POST' )) }}

     {{ Form::close() }}
</div>

Route::post('/credential', 'UsersController@setCredentials');

public function setCredentials() {

  $this->user= $user;
}

<input type="hidden" name="id" value="{{$user->id}}">

$user = User::find(Request::input('id'));

Form::model($user, ['route' => ['user.setCredentials', $user->id]])

Route::post('credential/{user}', 'UsersController@setCredentials')->name('user.setCredentials');

public function setCredentials(User $user) {

  $this->user= $user;
}