Reference: Siyar A’laam an-Nubalaa – Volume 18, Page 184
‘Izzaddeen ibn ‘Abdis-Salaam said:
From the books of Islaam, I have not seen knowledge [content] of the likes of “al-Muhallaa” of Ibn Hazm, and the book “al-Mughnee” of Muwaffaq ad-Deen [Ibn Qudaamah].
