\documentclass[a4paper,12pt]{report}
\usepackage{graphicx} % inserting images
%\usepackage{hyperref} % PDF links
\usepackage{setspace} % for switching between double/single space in document
\usepackage{fancyhdr} % package for changing Headings style
% setting the margins of page
\usepackage[top=3cm,right=4cm,bottom=3cm,left=3cm]{geometry}                 
\usepackage{xepersian}

% tell tex engine address of folder containing your pictures
%\graphicspath{{images/}}

% commands to print the page number in header
\pagestyle{fancy}
%%\cfoot{}
%\lhead{\thepage}

\newtheorem{thm}{قضیه}[section]
\newtheorem{cor}{نتیجه}
\newtheorem{lem}{لم}[section]
\newtheorem{prop}{الگوریتم}[section]
\newtheorem{exam}{مثال}[section]
\newtheorem{defn}{تعریف}[section]
\theoremstyle{remark*}
\newtheorem{rem}{تذکر}

% commands related to XePersian package
\settextfont[Scale=1.2]{XB Zar}
\setdigitfont{Yas}
%\setlatintextfont{LinLibertine}
% -------------------------------------

%\input{jeld_info}

\begin{document}

%\include{cover_fa}
%\include{taeid}
\include{Abs}

\pagenumbering{harfi}
\tableofcontents
%\listoffigures
%\listoftables

% insert each of your chapters with a \inlcude{filename} command as below
\doublespacing
%\include{chapter1}
%\include{chapter2}
%\include{chapter3}
% -----------------------------------------------------------------------

% If do not have appendix then comment following 3 lines
\appendix
%\include{index}
%\include{bliography}
% -------------------------------------------------------

\singlespacing
%\include{references}
%\include{AbsEn}
%\include{cover_en}

\end{document}