Mosque Al Mhennia or Al Ansar one of the first mosque in Kairouan even before the mosque of Okba Ibn Nafaa.
This brown calligraphy in its wall is the result of an ancestral ritual done by women: the make prayer and put some henna on the wall.
<a href="//commons.wikimedia.org/wiki/User:IssamBarhoumi" title="User:IssamBarhoumi">IssamBarhoumi</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>