\textbf{40 -- ``\textarabic{مصادر}'':}
\begin{enumerate}
\item A noun -- broken plural or verbal noun ( its singular ``\textarabic{مصدر}'' masculine) -- definite by \textit{iḍāfa} / \textit{muḍāf ilayhi} and \textit{majrūr}, and the \textit{muḍāf}: ``\textarabic{أهمّ}''
\item Broken plural -- a place noun ( its verb ``\textarabic{صدر}'' and its verbal noun ``\textarabic{تصدير}'') -- \textit{mu'rab} -- \textit{mamnū' min al-ṣarf} / \textit{muḍāf}, and the \textit{muḍāf ilayhi}: ``\textarabic{الغذاء}''
\item Broken plural -- a place noun ( on the pattern \textit{maf'al}) from a triliteral verb / \textit{muḍāf ilayhi} and \textit{majrūr}, and the \textit{muḍāf}: ``\textarabic{الغذاء}''
\item A noun -- broken plural ( its singular ``\textarabic{مصدر}'' masculine) -- a verbal noun ( derived from the verb ``\textarabic{صدر}'') -- \textit{mu'rab} -- \textit{mamnū' min al-ṣarf} / \textit{muḍāf ilayhi} and \textit{muḍāf}
\end{enumerate}
\noindent $\blacksquare$ \textbf{Identify the error in the voweling (41 and 42)}