Magento: Call .phtml file in cms page or in another .phtml file

The custompage is a custom folder inside tamplate directory.
and the home.phtml is the file name inside that folder

1- Call in Cms

{{block type="core/template" template="custompage/home.phtml"}}

1- Call in .phtml

<?php echo $this->getLayout()->createBlock('core/template')->setTemplate('custompage/home.phtml')->toHtml(); ?>