% !TEX TS-program = XeLaTeX
\documentclass{article}


\usepackage[inline]{enumitem}
\usepackage{xepersian}

\begin{document}

\begin{enumerate}[label=\alph*-]
	\item this is item a
	\item another item
	\item this is item a
	\item another item
	\item this is item a
	\item another item		
\end{enumerate}

\end{document}