There are many narrations and fatwa in Sunnite narrations and juristic books which give rise to many questions in the mind of readers.
Fakhrodin Zeinali narrates a fatwa by Ghasim ibn Ibrahim using and referring to a holy verse from Quran which permits every man to have nine wives simultaneously.
He says: God has allowed marrying two women by this phrase (Mothana), then in the rest of the sentence he brings the phrase (Thalas and Arba/three and four) which are added together by and (conjunctive preposition), so they totally mount to nine women permitted for man.
Then he adds: Nakha’ee and Ibn Abi Leyli have issued similar fatwa.
More importantly, some of them don’t define any limit to the number of the wives a man can have, such as Shokani quoted from Zaheriye, Ibn Sabagh, Emrani and Ghasemiye from Zeidiya sect, and Nezamodin A’araj. He has interpreted this verse: (فانكحوا ما طاب لكم من النساء)
He says: some people used this verse to claim there is no limit in the number of wives because this verse doesn’t assign any specific number.
A rootless accusation
Ibn Hazm accuses Shiest to this belief “having nine wives at the same time is permitted by god”, but he didn’t have any proof or reference on his accusation.
In the book Javaher-al-Kalam which is the most comprehensive juristic book of Shiism, it is said: to forbid the marriage of a man with more than four women at the same time is one of the essentials of religion and society.
Reference: Muhakemeh website