Bismillah wassalam’aleykum dear Shuyukhs,
Is Kitab Arba’in fi Usul ad-Dine from Imam Fakhr Dine Ar-Razi a trusted and reliable book in the Ach’ari school?
wa `alaykum salam,
All Imam al-Razi’s books are trusted and reliable and this book is well-known, but that does not mean scholars always accept everything other scholars from the same school say; sometimes their positions are hotly debated and then corrected or refined.
Hajj Gibril Haddad