Imam Abu Ja`far al-Tahawi (239-321) can be said to represent the creed of both Ash`aris and Maturidis, especially the latter, as he was also an Imam of the Hanafi madhhab. His Statement of Islamic Doctrine, commonly known as the `Aqida Tahawiyya, is representative of the viewpoint of Ahl al-Sunna wa al-Jama`a, and has long been the most widely acclaimed, and indeed indispensable, reference work on Muslim beliefs.

More about its importance from damas-original
 

Recommended commentaries:
– al-Babarti (Maturidi commentary)
– `Abd al-Ghani al-Ghunaymi al-Maydani
– Bajuri’ (Ash`ari commentaries)

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Book:
“The Creed of Imam al-Tahawi”
Arabic with transl. of Hamza Yusuf, Zaytuna Institute 2007