back()- with laravel code example

Example 1: laravel redirect back

return Redirect::back()->withErrors(['msg', 'The Message']);

and inside your view call this

@if($errors->any())
<h4>{{$errors->first()}}</h4>
@endif

Example 2: return redirect with message laravel

Route::post('user/profile', function () {
    // Update the user's profile...

    return redirect('dashboard')->with('status', 'Profile updated!');
});