the_title(); shows only first word in Title

Hi Experts..

I am in a little problem. I am trying to add a code for Tweet button. I used this code for the button
<a href="https://twitter.com/share" class="twitter-share-button" data-text=<?php the_title(); ?> data-count="horizontal" data-via="arifulhbhuiyan">Tweet</a>

here data-text=<?php the_title(); ?> is responsible to show the text in Twitter shutter window. but in the share window i find only the first word from the title appear.

What could be problem? and how to solve? 🙁