WP_Query Loop

         <?php
            $args = array (
                'pagination'             => true,
                'posts_per_page'         => '3',
                'meta_query'             => array(
                    array(
                        'key'       => 'rt_featured_post',
                        'value'     => 'si',
                    ),
                ),
            );

            $featured_post = new WP_Query( $args );

        while ( $featured_post->have_posts() ) :
        $featured_post->the_post();
            ?>

<?php endwhile; wp_reset_query(); ?>