Kitāb al-Ghayba
Hadith 597وكان أبو القاسم رحمه الله من أعقل الناس عند المخالف والموافق ويستعمل التقية.
In the view of Sunni and Shia scholars, Abul Qasim Husain bin Rauh was the most intelligent personage of his time, although he acted on dissimulation (Taqayyah).