Consider the MWE below:
MWE
\documentclass{beamer-rl}
\babelprovide[import=ar, main,mapdigits]{arabic}
\usepackage{enumitem}
\usetheme{CambridgeUS}
\title{مثال تجريبي}
\subtitle{نموذج}
\begin{document}
\section{اليوم الاول}
\subsection{مقدمة}
\begin{frame}
\frametitle{لمحة تاريخية}
\begin{enumerate}[label*=\arabic*.]
\item الجملة الاولى
\item الجملة الثانية
\begin{enumerate}
\item[ا.] تفرع اول
\item[ب.] تفرع ثاني
\item[جـ.] تفرع ثالث
\end{enumerate}
\item الجملة الثانية
\end{enumerate}
\end{frame}
\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-engine: luatex
%%% TeX-master: t
%%% End:
Question
I need to get the same output in Beamer without entering the sub-items manually (ا، ب، ج، د) these are the Hindi eastern Arabic letters, how to achieve that by having enumitem
package generate that automatically just as the numbers, i.e. I don't want to put the letters by myself each time I have subitems list especially when the list is actually a long one. How to do that?
Note
tex engine is luatex