Laravel - passing route parameter to blade

I am using Laravel 5.6, with the default make:auth mechanism.

In the routes/web.php, I would like to add a language middleware as follow:-

Route::prefix('{lang}')->group(function () {
    Route::get('password/reset', 'Auth\ForgotPasswordController@showLinkRequestForm')->name('password.request');
});

Now I wish to apply this in blade:-

<a href="">

But debugger just say:-

Missing required parameters for [Route: password.request] [URI: {lang}/password/reset].

I believe the blade cannot not get the {lang} from route. How can it be achieved?

via Chebli Mohamed