Simplify the following text for a Grade 7 native English-speaking person.
Original: There are also many important landmarks within the mosque for the ShÄ `` â ah , among them the place where the head of Husayn ( the grandson of Muhammad ) was kept on display by YazÄ `` d I. The tomb of Saladin stands in a small garden adjoining the north wall of the mosque .
Simplified: The tomb of Saladin stands in a small garden adjoining the north wall of the mosque .