get_comments() by Post ID

I am trying to get comments to show by their post ID. Right now this is displaying all of the recent comments. I feel like I am close. Can I do something along the lines of changing post_id=#id to post_id=$featuredPosts?

function slide() {
	global $post;

	$featuredPosts = new WP_Query();
	$featuredPosts->query("showposts=5&cat=15");
	$comments = get_comments('number=2&status=approve&post_id=$id');

        <?php while ($featuredPosts->have_posts()) : $featuredPosts->the_post();?>

                    <div>
                    	<div class="slide_post_info">
                    	<h4 class="slide_post_title"><?php the_title(); ?></h4>
                        <?php the_excerpt(); ?>
                        </div>
                        <div class="slide_post_reactions">
                            <ul class="slide_post_meta">
                                <li class="slide_post_commentcount"><a href="<?php the_permalink() ?>#disqus_thread"></a></li>
                                <li class="bottomlisplit"></li>
                                <li class="slide_post_time"><?php echo human_time_diff(get_the_time('U'), current_time('timestamp')) . ' ago'; ?></li>
                            </ul>
                        </div>
                        <div class="slide_post_comments">
                        <?php
                        foreach($comments as $comm) :
				echo '<li>';
				echo($comm->comment_author);
			        echo ':';
				echo($comm->comment_content);
				echo '</li>';
			endforeach;
						?>
                        </div>
                    </div>

                    <?php endwhile; ?><!--/close loop-->