Try this,
<?php
$args_latest = array(
'post_type' => 'post',
'ignore_sticky_posts' => 1,
'posts_per_page' => 4
);
$the_query = new WP_Query($args_latest); ?>
<?php while ($the_query -> have_posts()) : $the_query -> the_post(); ?>
<article>
<a href="https://wordpress.stackexchange.com/questions/155609/<?php the_permalink() ?>"><img src="https://wordpress.stackexchange.com/questions/155609/<?php bloginfo("template_directory'); ?>/img/post-images/Adithi_Dinner_blog.jpg" class="border" alt="image" /><h1><?php the_title(); ?></h1></a>
<p><?php echo substr(strip_tags($post->post_content), 0, 100);?></p>
<!-- <?php the_content( 'Read the full post ยป' ); ?>-->
</article>
<?php endwhile;?>
<?php wp_reset_query();?>
Please check if it works for you.