With currently over 12,000,000 "items" registered in Wikidata, most of them registered with bots there is a monumental task waiting to be undertaken. It is adding sources to all this information stated as facts.
In Wikipedia it is policy that facts stated in an article need to be supported by sources. It is also a matter of principle that Wikipedia itself can not be considered a source itself. Stating that something is true because Wikipedia says so is good for more than a smile. Oh and, there is not one Wikipedia, there are over 280 Wikipedias; enough reasons to snicker.
One of the things people are taught in Islamic schools is that they should rely on the original sources. When something of a religious nature is stated, it should be supported by what can be read in the original sources of the Islamic faith. In Wikidata many people and subjects that have to do with Islam have found their way as a fact that is not sourced. They include genealogical information like the one shown above or similar information about Q9458.
Having sourced information is important because some information present in Wikipedia is certainly wrong. Having incorrect information in Wikidata is even worse because it may present information used in 280 Wikipedias.
Bringing together people who know the relevant sources, who are willing to learn about Wikidata and edit its information is something you can do in a workshop. Organising a Wikidata workshop together with a mosque are two novelties; as far as I am aware there have been no workshops organised around Wikidata and, organising a Wiki workshop with a mosque is something I have not heard about either.