The Book of Occultation — al-Ṭūsī · Hadith 597 (#Ḥadīth #1)
Chapter 45 | Excellence of Husain bin Rauh continued
وكان 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).
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).