Are the following books: "Muntaha al-Iradat bi Sharh (Daqa'iq Uli al-Nuha - Ma'unat Uli al-Nuha)", "Kashf al-Qina' 'ala Matn al-Iqna'", and "Zad al-Mustaqni' (al-Sharh al-Mumti' - al-Rawd al-Murabbi')" considered authoritative for issuing fatwas according to the Hanbali madhhab, and is it permissible to derive rulings from them?

"Muntaha al-Iradat" by Ibn al-Najjar al-Futuhi is an authoritative book in Hanbali jurisprudence. The author himself commented on it in "Ma'unat Uli al-Nuha," and Al-Bahuti expounded upon it in "Daqa'iq Uli al-Nuha."

As for "Al-Rawd al-Murbi'," it is an invaluable commentary by Al-Bahuti on "Zad al-Mustaqni'" by Al-Hajjawi.

"Kashshaf al-Qina'" by Al-Bahuti is also a commentary on "Al-Iqna'," which, along with "Al-Muntaha," serves as a reference for fatwas within the madhhab.

"Al-Sharh al-Mumti'" by Ibn 'Uthaymin is a book written in an accessible style, focusing on evidence and reasoning, and occasionally diverging from the adopted view in the madhhab.

All these books are beneficial, but to ascertain the adopted view in the Hanbali madhhab, one must follow the methods of critical evaluation (tarjih) established by the Hanbalis, as elucidated by Al-Mardawi in "Al-Insaf."