The Wikipedia page has a banner template suggesting the page has multiple issues. The lack of a reference to the citizenship claim is just one.
The claim probably came from a false viral meme shared in 2020 claiming he was granted Malaysian Citizenship.
At the time, The Quint did a fact-check and confirmed the alleged photo of the ceremony was wrongly attributed. They tracked down a 2019 news report that quoted the Malaysian Home Minister:
"On the issue of application for Malaysian citizenship by Zakir, the review found that there was no record of application for citizenship of the individual in the database,"
This doesn't rule out that citizenship was granted after 2019, but suggests that both the meme and the poor-quality Wikipedia cannot be trusted in this regard.