\documentclass[a4paper,11pt]{report}
\linespread{1.5}
\usepackage{amsthm,amssymb,amsmath}
\usepackage[top=3cm,right=4cm,bottom=3cm,left=3cm]{geometry}
\usepackage{graphicx}
\usepackage[all]{xy}
\usepackage[pagebackref=false]{hyperref}
\usepackage{setspace}
\usepackage{hyperref}
\usepackage{amscd}
\usepackage[all]{xy}
\usepackage{fancyhdr}
\usepackage[nottoc,notlof,notlot]{tocbibind}
\usepackage{makeidx}
%\makeindex
\usepackage{xepersian}
\renewcommand{\baselinestretch}{1.5} 
\graphicspath{{images/}}
%\setromantextfont[Scale=1.25]{Junicode}
\settextfont[Scale=1.0]{XB Niloofar}                                                      
\setdigitfont[Scale=1.08]{XB Zar}
\setlatintextfont[ExternalLocation,BoldFont={lmroman10-bold},BoldFont={lmroman10-bold},Font={lmroman10}]{lmroman10-regular} 
\defpersianfont\nastaliq[Scale=1.2]{IranNastaliq} 
\pagestyle{fancy}
\cfoot{}
\lhead{\thepage}
%--------------------------------------------------

\begin{document}
\pagenumbering{harfi}
\doublespacing
\tableofcontents
%\renewcommand{\theequation}{\beginL\arabic{chapter}\arabic{equation}\endL}
\include{mogadame}
\include{introduction}
\singlespacing
\baselineskip=.75cm
%\include{references}

\end{document}