The Arabic-Afrikaans Tradition of the Cape

https://en.wikipedia.org/wiki/Belarusian_Arabic_alphabet

It turns out some muslim tatars settled in Belarus and were happily writing ruthenian (aka old belorussian, aka old western russian) in arabic script, even introduced some extra letters.

Urdu is similar, where the Persian/Arabic script was adopted to write Hindustani, the prevalent spoken language of north/central India. Its beginning to fall into disuse in India but is the national language of Pakistan. https://en.wikipedia.org/wiki/Urdu

This is very similar to Arwi when the Arab moors migrated to Tamil Nadu and Sri lanka. They wrote Tamil in Arabic script. It still gets taught at mosques in Tamil Nadu though no uses it any more. https://en.wikipedia.org/wiki/Arwi

Another example is https://en.wikipedia.org/wiki/Xiao'erjing, used for Mandarin Chinese and other Sinitic languages.

I am from Senegal, I have seen it a few times when I was younger.

But no worries, we have now changed the Arabic to Roman letters to write our own language since we still do not have our own (popular) alphabet. Same difference.

Another https://en.wikipedia.org/wiki/Arebica used for the Bosnian language.

Likewise, for Spanish https://en.wikipedia.org/wiki/Aljamiado