How can I pass variables between DRY templates and ncludes in Jekyll -

I have a simple blog site where the home page index is a list of posts, not sorted as individual pages and Has been rendered.

I have index page setup and work:

  --- layout: default ---  Div & gt; {% Included post / post.html%} {% endfor%} & lt; to post in {% Post.posts%} / Div & gt;   
 Where there is a post layout using  Post / PostWhite  using the  post  variable: 
 
  & Lt; Articles & gt; & Lt; Header & gt; {% Include / title.html%} {% include / post metadata. Html%} & lt; / Header & gt; Includes & lt; Div class = "entry-content" itemprop = "text" & gt; {{Post.content}} & lt; / Div & gt; & Lt; / Article & gt;  
 
 Now, on a specific post page, I want to include it in the layout so that I can keep my code DRY, so I have  post.html  layout (Different from  posts / post.html ): 
 
  --- layout: default comments: true --- {% include post / post) Html%}  
 
 But the problem is that the included file is expected to be such a  post.content  variable of  posted  how you can access it Are the material 
 
 I have tried: 
 
  {% assign post = page%}  
 
 and it seems right to pass a variable To do this, but the page is not correct because it presents a markdown string instead of html on the page. 
 
 So, how do I  self  - or whatever is needed - so that the file for the index page or post page does not need to be changed, thus sharing the same code Is required? 
 

While @ David Jquel's answer is poor Kashmir, I found it impure and a little verbatim, Although it took me to the right path

{{body}} for {{PostContent}} { / P>

  & lt; Articles & gt; & Lt; Header & gt; {% Include / title.html%} {% include / post metadata. Html%} & lt; / Header & gt; Includes & lt; Div class = "entry-content" itemprop = "text" & gt; {{Body}} & lt; / Div & gt; & Lt; / Article & gt;  

_layouts / index.html now uses

  {% assign body = post content%} {% include post / Post.html%}  

_layouts / post.html Uses:

  {% assign post = page% } {% Assign body = content%} {% include post / post.html%}  

Simple.