I used the code which was rendering the main-menu
from page.tpl.php
file in the theme that I am using in my current project Nexus.
<div id="main-menu">
<?php
if (module_exists('i18n_menu')) {
$main_menu_tree = i18n_menu_translated_tree(variable_get('menu_main_links_source', 'main-menu'));
}
else {
$main_menu_tree = menu_tree(variable_get('menu_main_links_source', 'main-menu'));
}
print drupal_render($main_menu_tree);
?>
</div>
So i used the following extraction:
<?php
$main_menu_tree = menu_tree(variable_get('menu_main_links_source', 'main-menu'));
print drupal_render($main_menu_tree);
?>
in a views template file for row design. The main menu appeared with content.
Note: The menu which will be rendered might not be themed.