Where to translate "previous" and "next" post buttons?

Where do I translate and replace the buttons below the posts?

 

Hello,

To translate these words go to the
harringtontheme\functions\define_template.php
You can also translate theme po file (harringtontheme\languages). There is no need to translate each word separately.
For more info please follow link given below.
http://www.inkthemes.com/how-to-cre...-of-wordpress-theme-in-multiple-languages/02/


Thanks & Regards
Nitesh Raghuwanshi

 

Great. Thanks a lot!