Get only first image in blade template from foreach loop

We have two tables room and room images. I am using relation in both tables and want to get the first image from room images table (For thumbnail). Below foreach loop is working fine on single detail page. Now i want to get the thumbnail image for main page.

@foreach ($room->tbl_roomimages as $single_img)
    <img src="/storage/cover_images/" alt="">
@endforeach

via Chebli Mohamed