\documentclass[12pt,a4paper]{report}
\usepackage{amsmath,tikz}
\usepgflibrary{arrows}
\usepackage{xepersian}
\settextfont[Scale=1.1]{Yas}
\setdigitfont{Yas}
\tikzstyle{vertex}=[circle, draw, inner sep=0pt, minimum size=10pt]
\newcommand{\vertex}{\node[vertex]}
\begin{document}
\begin{tikzpicture}[scale=1,very thick]
\draw[very thick] (-2,.5) -- (2,.5) (-2,-.5) -- (2,-.5) (-1,1.5) -- (1,1.5) (-1,-1.5) -- (1,-1.5) (-1.5,1) -- (-1.5,-1) (-.5,2) -- (-.5,-2)
(1.5,1) -- (1.5,-1) (.5,2) -- (.5,-2);
\vertex[fill] (a) at (-1,0) [] {};
\vertex[fill] (a) at (1,0) [] {};
\vertex[fill] (a) at (0,1) [] {};
\vertex[fill] (a) at (0,-1) [] {};
\draw [>=stealth,->] (1,0)-- (0,0);
\draw [>=stealth,->] (-1,0)-- (0,0);
\draw [>=stealth,->] (0,1)-- (0,0);
\draw [>=stealth,->] (0,-1)-- (0,0);
\node at (0,-3) {\Large $t$};
\draw[very thick,->](3,0)--(5,0){};
\node at (4,.5) {\Large $\mu$};
\draw[very thick] (6,.5) -- (10,.5) (6,-.5) -- (10,-.5) (7,1.5) -- (9,1.5) (7,-1.5) -- (9,-1.5) (6.5,1) -- (6.5,-1) (7.5,2) -- (7.5,-2)
(9.5,1) -- (9.5,-1) (8.5,2) -- (8.5,-2);
\vertex[fill] (a) at (7,0) [] {};
\vertex[fill] (a) at (9,0) [] {};
\vertex[fill] (a) at (8,1) [] {};
\vertex[fill] (a) at (8,-1) [] {};
\node at (8,-3) {\Large $t+1$};
\end{tikzpicture}
\end{document}