Can we make shahadah (16) a synonym of shahada (3)?
As per the transliteration protocol: the Wikipedia page is shahada.
We might as well think about a suitable tag wiki excerpt at the same time. The current one is:
ash-Shahadah الشهادة is an Islamic creed declaring belief in oneness of God and the acceptance of Muhammad as God's prophet
but this does not meet the guideline "Avoid generically defining the concept behind a tag, unless it is highly specialized." on Redesigned Tags Page and What should a tag wiki excerpt contain?.