Yes, its working after I play with it a little.

Now, this code is working exactly how I wish..

<?php
/*
Plugin Name: Ad Redirect
*/

// Hook our custom function into the 'pre_redirect' event
yourls_add_action( 'pre_redirect', 'warning_redirection' );

// Our custom function that will be triggered when the event occurs
function warning_redirection( $args ) {
        $url  = $args[0];
        $code = $args[1];
  
        // Print the message
		
  header( "refresh:5;url=$url" );
  echo 'You\'ll be redirected in about 5 secs.';
   
?>
<div style="margin:auto;">
<script type="text/javascript"><!--
google_ad_client = "ca-pub-3096305097062678";
/* 125x125, created 1/21/11 */
google_ad_slot = "3050924195";
google_ad_width = 125;
google_ad_height = 125;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script></div>
<?php 
        // Now die so the normal flow of event is interrupted
        die();
				
}

Thank you very much...

<?php
/*
Plugin Name: Ad Redirect
*/

// Hook our custom function into the 'pre_redirect' event
yourls_add_action( 'pre_redirect', 'warning_redirection' );
		
// Our custom function that will be triggered when the event occurs
function warning_redirection( $args ) {
        $url  = $args[0];
        $code = $args[1];
  
        // Print the message
	
  header( "refresh:5;url=$url" );
  echo 'You\'ll be redirected in about 5 secs.';

        // Now die so the normal flow of event is interrupted
        die();				
}

Well, thanks to you. I some how managed to make it wait for 5 seconds, but don't know to show ads on that page.
As, this link http://taimoorsultan.com/url/o is going to twitter after 5 secs.
Oh, Happy New Year..

I have posted this question in lot of forums but still not a single reply from any of them. And I want to thank you for your time, as till now we have a long conversation.
Thanks

same output with that code.
ok, if I give your ftp and Yourls login details, can you check it then?
Thanks again!

$url contains the destination url for every shorten url.

This is the output of the url after placing the code you have given.
http://taimoorsultan.com/url/n